Caramelized Onion and Horseradish Mashed Potatoes are pretty much to-die-for mashed potatoes with a little bit of kick to them.
I must admit, I was afraid these caramelized onion and horseradish mashed potatoes would be too spicy for my family to eat. Not to worry! The spicy stuff adds just enough flavor to make them awesome! Perhaps add a little bit of the horseradish mixture at a time to make sure they are just right for you!
- brown sugar
- white balsamic vinegar (optional)
- baking potatoes
- whole milk
- Dijon mustard
- lemon juice
How to make Caramelized Onion and Horseradish Mashed Potatoes:
The complete, printable recipe is at the end of this post.
Stir the Dijon- caramelized onion mixture into the potatoes in the pan. They’re ready to serve!
If you are a lover of caramelized onions, you will most definitely be into these mashed potatoes. If you aren’t really an onion lover, then these might not be for you. I think they’re amazing!
They’re not so smooth and creamy like traditional mashed potatoes because of the added onions. But those onions add some pretty delicious flavor (along with the Dijon and horseradish, for sure).
These caramelized onion mashed potatoes would be fabulous served on their own with a dab of butter- alongside roasted chicken or grilled meats. They’re also fabulous served with gravy for a traditional Thanksgiving supper. Enjoy!
Here are a few more mashed potato recipes you might like to try:
- How to Make Perfect Mashed Potatoes
- Buttermilk- Blue Cheese Mashed Potatoes
- Creamy Oven-Baked Mashed Potatoes
- Bacon, Ranch and Cheddar Mashed Potatoes
- Roasted Garlic Mashed Potatoes
If you happen to be following the Weight Watchers WW plan, you’ll find a link to the WW Points on the recipe card below.
Caramelized Onion and Horseradish Mashed Potatoes
- ¼ cup (½ stick) butter, divided
- 4 cups chopped onion
- 2 teaspoons brown sugar
- 1 tablespoon white balsamic vinegar (optional)
- 2½ pounds peeled and cubed baking potatoes
- ½ cup whole milk
- ¼ cup Dijon mustard
- 1 tablespoon freshly squeezed lemon juice
- 2 tablespoons prepared horseradish
- 1 tablespoon light mayonnaise
- ½ teaspoon salt
- In a medium nonstick skillet, melt 1 tablespoon of butter over medium-high heat. Add the onion and sugar; saute 10 minutes or until caramelized. Remove from heat; stir in the vinegar, if desired.
- Place the potatoes in a saucepan, and cover them with water. Bring to a boil. Reduce the heat; simmer 15 minutes or until tender.
- Drain and return the potatoes to the pan. Add 3 tablespoons butter and milk; mash to your desired consistency. Cook for 2 minutes or until thoroughly heated, stirring constantly.
- In a small bowl, combine the Dijon mustard with the remaining ingredients, stirring with a whisk until blended. Add the Dijon mustard mixture and caramelized onion mixture, stirring to combine. Then stir it all into the mashed potatoes.
- If preparing this as a GLUTEN FREE recipe, just make sure that you are using a brand of mayonnaise that is designated as GF.