posted in Cookbook Reviews

Gooey Chocolate Chip Sandwich Bars

These are just about the best treats I’ve ever made:  Gooey Chocolate Chip Sandwich Bars.  They’re full of gooey chocolate, and that’s a good thing!!

Scroll toward the bottom to watch a quick how-to video showing you how to make this recipe, then print out the complete recipe below.

Gooey Chocolate Chip Sandwich Bars recipe - from

September is Pediatric Cancer Awareness month.  What do these goodies have to do with cancer? The Gooey Chocolate Chip Sandwich Bars come from the “Cookies For Kids Cancer: Best Bake Sale Cookbook.

Gooey Chocolate Chip Sandwich Bars recipe - from

Cookies for Kids' Cancer

The Cookies for Kids’ Cancer cookbook provides directions on how to hold a bake sale, signage, and lots of recipes and photos. The best part? All of the author’s royalties go directly to help fight pediatric cancer by funding research into new treatments and a cure.

Author Gretchen Holt-Witt founded in 2007 when her two-year old son Liam was diagnosed with pediatric cancer. A few years and a few hundred thousand cookies and bake sales later, this charity has raised millions of dollars to help fun new pediatric cancer treatments.

Kids helping kids… I like that.

Gooey Chocolate Chip Sandwich Bars recipe - from

These are slab cookies. Made in one pan and lifted out as a slab. Love that word- slab. Slab. Slab. (sorry)

Gooey Chocolate Chip Sandwich Bars recipe - from

They’re a little chocolatey.  SOOO good right out of the pan and warm and gooey, but rather hard to cut.

It’s best to chill them and them cut them neatly.  If you’re into being neat.

Gooey Chocolate Chip Sandwich Bars recipe - from

So let’s talk about the makeup of these bars.  They’re basically chocolate chip- oatmeal cookie dough spread into the bottom of a pan, then topped with a gooey chocolate layer, then topped with more chocolate chip- oatmeal cookie dough.

I love the sort of natural, rustic crackle look on the tops of the bars.  Gives you a lil’ peek that there is a gooey layer of chocolate hidden in the middle.

Hungry?  Craving chocolate now?  Yeah, I thought so.

Gooey Chocolate Chip Sandwich Bars recipe - from

And there they are… my “neatly” cut Gooey Chocolate Chip Sandwich Bars.  Chocolate overload, if you like that sort of thing.  Good with milk, if you drink that stuff.  And perfect for a bake sale, where you’ll make big bucks to donate to Cookies for Kids’ Cancer.

I think it’s a great idea for kids to have bake sales for charity– showing them that it’s not all about making money for themselves to purchase their next Wii game or iTunes gift card or whatever.  There are things much more important in this world.

Click below to watch a short video showing you how to make these bars, then print out the complete recipe.

Yield: 32 bars

Prep Time: 30 minutes

Cook Time: 20 minutes

Gooey Chocolate Chip Sandwich Bars



  • 2 cups semi-sweet chocolate chips
  • One 14-ounce can sweetened condensed milk
  • 2 teaspoons vanilla extract


  • 1 cup (2 sticks) unsalted butter, at room temperature
  • 1 cup light brown sugar
  • 1/2 cup granulated white sugar
  • 1 large egg
  • 1 large egg yolk
  • 1 tablespoon vanilla extract
  • 2 cups all-purpose flour
  • 1 cup quick-cooking or old-fashioned rolled oats
  • 1 teaspoon baking powder
  • 1 teaspoon baking soda
  • 1 teaspoon kosher salt
  • 3 cups semi-sweet chocolate chips


  1. Preheat oven to 350 degrees F. Lightly butter a 9x13-inch pan with parchment paper, allowing enough overhang on the long side to lift the bars from the pan.
  2. Prepare the gooey chocolate filling: Place the chocolate chips and condensed milk in a small saucepan over the lowest possible heat and cook, stirring constantly, until the chocolate has melted and the mixture has thickened, 3 to 5 minutes. Turn off the heat, add vanilla, and stir until smooth. Set aside to cool to room temperature.
  3. Prepare the cookie dough: Place the butter and sugars in a large bowl. Beat with an electric mixer until smooth and creamy. Add the egg, egg yolk and vanilla. Beat well. Whisk together the flour, oats, baking powder, baking soda and salt in a medium bowl. Add to the butter mixture. Beat until everything is well incorporated, scraping down the sides of the bowl as needed. Stir in the chocolate chips.
  4. Prepare the bars: Using half of the batch of cookie dough, place dollops into the prepared pan and press down lightly to even it out. Pour the cooled chocolate mixture over the dough and then add small dollops of the remaining dough on top. Don't worry if the dollops don't completely cover the chocolate mixture. Just spread it together as much as you can, and let some chocolate peek through.
  5. Bake until lightly browned, 20 to 25 minutes. Set aside to cool completely, then cut into 32 bars.


  • These are easiest to cut when they have chilled for a while. You'll be able to get nice, clean cuts when they're firmer, then they'll soften up a bit when they're at room temperature again.
SOURCE: (Adapted slightly from the Cookies for Kids' Cancer Cookbook)

Here are a few more bar recipes you might enjoy:

240 Responses to “Gooey Chocolate Chip Sandwich Bars”

  1. postedSep 29, 2011 4:05 AM

    I LOVE snickerdoodles … I’m a huge chocolate fan, but a homemade snickerdoodle wins me over every time!

  2. postedSep 29, 2011 4:22 AM

    These look incredible. Gooey, chocolate, yumminess! Thanks for sharing. Love your site.

  3. postedSep 29, 2011 4:26 AM
    Lauren at Keep It Sweet

    Those bars look unbelievable! I’d be looking for cookies at a bake sale.

  4. postedSep 29, 2011 4:40 AM
    Averie @ Love Veggies and Yoga

    Lori these look fabulous! I love oatmeal cookies AND choc chip cookies AND bars AND chocolate. You have combined my four major food groups into one recipe. Perfect!

    And your photography is some of your best ever in this post. LOVELY!

  5. postedSep 29, 2011 5:14 AM
    lisa@ nailed it

    these look amazing!!! if i were to find myself in a bake sale I’d hope to find some really tart lemon squares!

  6. postedSep 29, 2011 5:18 AM

    Looks delish! Brownies with icing would be my bake sale item!

  7. postedSep 29, 2011 5:39 AM
    Jeanne ODonnell

    Usually some kind of cookie….i love cookies!

  8. postedSep 29, 2011 5:42 AM

    My favorite baked good….cookies! I love chocolate chip cookies! I also love brownies. I’m a chocoholic…very hard to choose! 🙂

  9. postedSep 29, 2011 5:50 AM


  10. postedSep 29, 2011 6:07 AM

    My favorite bake sale baked good are magic bars-that graham cracker crust with the sweetened condensed milk is just so delicious!

  11. postedSep 29, 2011 6:29 AM

    Such a great cause! I’d be looking for cupcakes!

  12. postedSep 29, 2011 6:58 AM

    My favorite treat at a bake sale is a good chocolate chip cookie. A ooie-gooie chocolate chip cookie.
    I love that you are supporting this cause. My husband lost his sister to cancer at the age of 11. He also lost his mother to cancer too.

  13. postedSep 29, 2011 7:14 AM

    Apple bars!

  14. postedSep 29, 2011 7:24 AM
    Michele (@AMushroomQueen)

    Mercy L you sure no how to make the mouth water with these delicious looking cookies.. Great cause helping kids with cancer, kudos!

  15. postedSep 29, 2011 7:24 AM

    I want these! I am always up for any type of cookie

  16. postedSep 29, 2011 7:25 AM

    This is an awesome recipe, awesome book and awesome cause! Thank you for posting!

  17. postedSep 29, 2011 7:33 AM

    It’s hard to say “no” to a baked good of any kind…but I’m a sucker for rice krispie treats!

  18. postedSep 29, 2011 7:36 AM

    I am a sucker for brownies!! The book looks great

  19. postedSep 29, 2011 7:42 AM
    Linda K

    I love chocolate chip cookies so that is usually the first thing I look for at a bake sale.

  20. postedSep 29, 2011 7:43 AM

    Holy moly, that looks delicious. Cookies and brownies are all well and good, but when I go to a bake sale, I love to find a good whoopie pie!!

  21. postedSep 29, 2011 7:53 AM

    I love peanut butter cookies. Especially peanut butter kiss cookies. Yum.

  22. postedSep 29, 2011 8:06 AM
    Dana B

    response from my 7 yo: Oh! That looks yummy!!! That would also be good for my loose tooth! 🙂 I must say I agree on the yummy 🙂 great cause, too. hate cancer 🙁

  23. postedSep 29, 2011 8:08 AM

    Favorite baked good?! How can I pick?! I think I’ll have to say really chocolaty brownies.

  24. postedSep 29, 2011 8:10 AM

    When I go to a bake sale I am looking and buying brownies!! If they have frosting that is the best!!

  25. postedSep 29, 2011 8:23 AM

    I baked these a couple of months ago as a get-well baked good! They were a big success, and you’re so right–an ooey, gooey slab of deliciousness. 🙂

    My favorite baked good to see at a sale has to be big, soft oatmeal raisin cookies. They’re friendly, portable (a major concern when you usually wind up eating what you buy while walking! Cupcakes are just messy, despite their yum factor), and classic.

  26. postedSep 29, 2011 8:24 AM

    I love bake sales!!!! There’s nothing like being able to purchase home made items……anything from rice krispy treats to brownies to cookies…, love, love a good bake sale and would do anything to support kids cancer!!!

  27. postedSep 29, 2011 8:25 AM

    I just tweeted about the giveaway (via @chipchiphooray), too! 🙂

  28. postedSep 29, 2011 8:32 AM

    My favorite baked good that I would hope to see at a bake sale is honestly, something just like this! I love gooey cookies, whether they are in cookie or bar form!

  29. postedSep 29, 2011 8:33 AM

    I tweeted about the giveaway, great cause!

  30. postedSep 29, 2011 8:52 AM
    Sam H

    I am such a sucker for HUGE CHOCOLATE CHIP COOKIES! Only when soft however… mmmmmmmmmm.

  31. postedSep 29, 2011 8:53 AM

    Loooove these! The bars are mouthwatering to look at!

  32. postedSep 29, 2011 9:01 AM
    Sara M

    I love anything with frosting! brownies, cookies, cupcakes. You can’t go wrong!

  33. postedSep 29, 2011 9:12 AM

    I love peanut butter anything, and if it’s paired with oatmeal it’s even better!

  34. postedSep 29, 2011 9:13 AM

    I posted on FB about this great giveaway – Hope I win a copy, but if not I’ll definitely have to buy one – I have a soft spot for cookies 🙂

  35. postedSep 29, 2011 9:18 AM

    If I was going to a bake sale…I love oatmeal chocolate chip cookies! And oreo truffles….those are what I would look for. Great give away!

  36. postedSep 29, 2011 9:19 AM

    And I just tweeted about this! =) Thanks again!

  37. postedSep 29, 2011 9:26 AM

    I would definitely buy these at a bake sale. They look like winners.

  38. postedSep 29, 2011 9:27 AM

    I’m coming from your son’s blog….thanks for the giveaway!

  39. postedSep 29, 2011 9:28 AM

    These bar cookies look absolutely delectable! Yum yum yum, I definitely need to try them. 🙂

    My favorite baked good is brownies!

  40. postedSep 29, 2011 9:29 AM

    What a great book and a great cause!! I love cookie bars like these – super easy!! And my favorite bake sale good is probably cookies (or bars like these!)

  41. postedSep 29, 2011 10:19 AM

    Great cause and great cookies! I’m a little bit of a chocoholic so I really don’t have one single item that I would prefer over the others at a bake sale. My favorites only have one requirements…IT’S MADE OF CHOCOLATE!

    I am going to tweet this link out to our followers (@EMCjoe) and also post on our Facebook page ( Keep up the good work and I look forward to continue following on Twitter!

  42. postedSep 29, 2011 10:53 AM
    Kristy H


    My favorite bake sale recipe would be, (hands down!), your peanut butter cookie dough brownies. They are too delicious to keep to ourselves. My kids can’t quit raving about them!

  43. postedSep 29, 2011 11:12 AM

    First of all, these look delicious! If these were at a bake sale, I’d buy the whole pan from you! In all seriousness, I usually go for the chocolate chip cookies. = )

  44. postedSep 29, 2011 11:35 AM

    This looks amazing! I’ve been on a huge baking kick lately. I just keep giving it all away. I’ll have to make this. I love bake sales. I usually veer to the chocolate chip cookies or brownies. This is a great cause.

  45. postedSep 29, 2011 11:37 AM

    Did you mention that it is a slab? Great post and wonderful recipe. My husband loves chocolate. I am making this. Thanks.

  46. postedSep 29, 2011 11:54 AM
    Meg @ Sweet Twist

    Normally I would say a large chewy chocolate chip cookie but I am now hoping for these bars.

  47. postedSep 29, 2011 11:56 AM
    Jenna H.

    I’m a traditionalist – I would look for a big chocolate chip cookie (no nuts) or a brownie (again, no nuts). Yum!
    Thanks for the giveaway!

  48. postedSep 29, 2011 12:21 PM
    Joanie from CLBB

    Wooboy, I came to print off your Peanut Butter Cookie Dough Brownies recipe, and find this eye-popping chocolate slab o’cookie up at the top! Great cause, tho, and thanks for all the hip-padding you’re responsible for, too 😉

  49. postedSep 29, 2011 12:38 PM

    For a bake sale I would make your sugar cookie bars. Which reminds me I have a bake sale coming up that I said I would participate in!! Thanks for making my life easier with your ideas!! From past experience, fresh apples, oranges, and bananas are good to have on hand as well for bake sales. (There are those “healthy” folks out there)!

  50. postedSep 29, 2011 12:56 PM

    I love soft pretzels with honey mustard. AND oatmeal cookies with butterscotch chips!

  51. postedSep 29, 2011 1:04 PM

    Shared this on Facebook!

  52. postedSep 29, 2011 1:28 PM

    Brownies, I love brownies!

  53. postedSep 29, 2011 1:29 PM

    I shared on Facebook.

  54. postedSep 29, 2011 1:53 PM

    Black Friday cookies or rice krispies bars 🙂

  55. postedSep 29, 2011 1:55 PM

    early Fall yard saling mornings I love to find hot apple cider and pumpkin muffins 🙂

  56. postedSep 29, 2011 2:25 PM

    I’m a sucker for quick breads. Banana bread, pumpkin bread, zucchini bread – I love them all.

  57. postedSep 29, 2011 2:35 PM
    Brittany C.

    My favorite thing to buy at a bake sale would probably be a big, soft sugar cookie, with frosting of course. Or a really good chocolate chip cookie, and if it happened to be dipped in chocolate and then sprinkled with toffee or nuts, it wouldn’t hurt 😉

  58. postedSep 29, 2011 2:41 PM

    Favorite baked good? Brownies! Classic!

  59. postedSep 29, 2011 2:41 PM
    Treva Fendrick

    I love homemade ginger snaps and would buy them at any bake sale. since I can’t find one today, I went ahead and made some myself!

  60. postedSep 29, 2011 2:42 PM


  61. postedSep 29, 2011 3:16 PM
    KJ in IA

    I always look for puppy chow or muddy buddies…whatever you want to call it. I don’t like to make it at home because I eat it all so a bake sale is the perfect place to get enough but not too much!

  62. postedSep 29, 2011 5:45 PM

    Holy whoa, check out that chocolate! And I’m not even a crazy chocolate girl 🙂 What a great cause – the bake sale cookbook – I love it! Hmm, if I were going to a bake sale, I’d have my eye on the cookies and bars… I never like buying cakes at bake sales, for whatever reason.

  63. postedSep 29, 2011 5:46 PM
    Kelly Sears

    The In-Laws are coming… The In-Laws are coming! All will be well with these bars (it’s okay if I stash 1/2 the pan in my nightstand, right?)

  64. postedSep 29, 2011 6:35 PM

    I love baking cookies and bars and cupcakes! Really just everything. I think a good cupcake is just about the most delicious thing.

  65. postedSep 29, 2011 6:54 PM

    I’m a chocoholic but there is something about rice krispie treats when they are ooey and gooey that makes me steer away from the chocolate and straight for them! Ps-what a great cause!

  66. postedSep 29, 2011 7:16 PM

    From a bake sale? Some sort of great brownie with lots of chunks of nuts and chocolate in it.

  67. postedSep 29, 2011 7:18 PM

    CHOCOLATE! Anything with chocolate covers my families wish list.
    Love the fact you are helping all of our precious children with this great cause which benefits our children and the sweet tooths of many. I will be happy to spread this news of this give away and charity with all my Facebook friends and my email friends. Thank you for your dedication and Blessings to your child.

  68. postedSep 29, 2011 7:20 PM

    Tweeted:!/saladgoddess/status/119597117684715520 Great cause. Well done RecipeGirl and RecipeBoy!

  69. postedSep 29, 2011 7:31 PM

    I love bake sales….pies, whole pies are such a treat to find and buy at a bake sale. 🙂

  70. postedSep 29, 2011 8:07 PM

    I would be buying some gooey cinnamon rolls!

  71. postedSep 29, 2011 8:07 PM

    I can never pass up a chocolate chip cookie! Although anything with peanut butter and chocolate will work too. What a great cookbook for such a good cause. If I don’t win, i’m buying it, and if I do win, I’ll donate the cost to the cause!

  72. postedSep 29, 2011 8:09 PM

    I tweeted this post!

  73. postedSep 29, 2011 8:14 PM

    Definitely would buy some chocolate chip cookies and/or chocolate chocolate chocolate ! brownies.

  74. postedSep 29, 2011 8:28 PM

    Left comment on Recipe Boy’s giveaway, too!

  75. postedSep 29, 2011 8:32 PM
    Sarah Lorde

    I love a good brownie

  76. postedSep 29, 2011 8:33 PM
    Sarah Lorde

    I entered your son’s giveaway

  77. postedSep 29, 2011 8:50 PM

    I hosted a breast cancer bake sale and I had the most fun making cake pop’s that looked like boobies. 🙂 lol I think this is fabulous. My 2yo cousin is currently fighting neuroblastoma and I am always trying to help them raise money.

  78. postedSep 29, 2011 8:52 PM

    I posted it to my facebook that will go to twitter, too. Bonus!

  79. postedSep 29, 2011 9:18 PM

    Yum! These look great! I love cookies of all kinds so that’s what I usually get at bake sales. I’d be inclined to pick oatmeal raisin as my favorite but I love cut outs too (those are hit or miss at bake sales though).

  80. postedSep 29, 2011 9:46 PM
    Amanda Thompson

    My favorite baked goods are brownies, followed closely by lemon bars!

  81. postedSep 29, 2011 10:03 PM

    Lemon Bars yum!

  82. postedSep 29, 2011 10:06 PM

    I’d go for chocolate chip cookies at a bake sale!

  83. postedSep 29, 2011 10:50 PM
    Nancy L

    I would go to a bake sale for Chocolate Chip cookies, of course!

  84. postedSep 29, 2011 10:59 PM
    Nancy L

    Tweeted about the great giveaway…Thanks!

  85. postedSep 30, 2011 12:05 AM

    Too bad it’s difficult to lick the knife! These look great. Can’t wait to try them 🙂

  86. postedSep 30, 2011 12:25 AM

    LOVEEE the look of these, on the to make list for the imminent future! 🙂

  87. postedSep 30, 2011 2:28 AM

    These cookies are mouthwatering! I’d be looking for cookies and more cookies at a bake sale!

  88. postedSep 30, 2011 2:33 AM

    I retweeted your tweet about the giveaway.

  89. postedSep 30, 2011 3:04 AM

    I’m going to make these for an open house at my daughter’s school next week!

  90. postedSep 30, 2011 3:27 AM
    barbara n

    I usually look for pies – since I have not perfected my own pie crust yet!

  91. postedSep 30, 2011 3:32 AM
    barbara n

    I left a comment on and would love to win this cookbook!

  92. postedSep 30, 2011 3:37 AM

    These look amazing, I can’t wait to make them! My favorite baked good would have to be ANYTHING with chocolate; cookies, cakes, pies…chocolate, chocolate, chocolate.

  93. postedSep 30, 2011 3:56 AM

    My favorite would have to be any thing in cookie form ~ love cookies!! Chocolate chewies!! These look great!

  94. postedSep 30, 2011 3:58 AM

    add I just tweeted too ~ Thanks !

  95. postedSep 30, 2011 4:28 AM

    Anything with Chocolate in it!!!!!!!

  96. postedSep 30, 2011 5:01 AM

    I would be looking for anything chocolate. There is no greater reward than helping out kids!!!

  97. postedSep 30, 2011 5:16 AM

    I love all baked goods, and what I would buy would probably depend on what I am craving that day! I love a good fudgy brownie, creamy lemon bars, or red velvet cupcake with cream cheese frosting.

  98. postedSep 30, 2011 5:20 AM

    As a buyer at a bake sale, I have a tendency to lean toward the well known items that are easily recognizable, as any child would do as well. We all seem wired to go for the familiar and cozy goods such as rice cripes squares, brownies, chocolate chip cookies, cupcakes or better known as the easy identifiable items or as my mother would say “old standbys”. I will always try a chocolate chip cookie as well just to make sure and validate mine are always better ? Sad I know but I do. I want to be more adult like and adventurous and daring in my purchases but somehow always end up with the same old things. Why is that? Are we creatures of habits? My thoughts… bake sales were always so much more fun as a kid and we gravitate to what our palates were at that time. Who knew what an Almond Pecan Florentine was or even Biscotti at the age. A lot can be said for memorable baked goods… ?

  99. postedSep 30, 2011 5:22 AM
    Cindy B.

    I would buy oatmeal raisin cookies, my favorite!

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