Line an 9x13-inch pan with foil; coat with cooking spray.
In a heavy bottom 3 quart sauce pan, combine the sugar, butter and milk. Bring to a rolling boil over medium heat, stirring constantly.
Boil for 5 minutes, stirring all the time- if using a candy thermometer- let it get up to at least 234 degrees. Remove from heat and stir in the cinnamon chips until melted. Add the marshmallow creme and vanilla; beat with a wooden spoon until well blended.
Carefully pour the mixture into the prepared dish. Let cool to room temperature; gently lift out of the pan and place on a cutting board. Cut into squares.
Notes
*Cinnamon chips can be ordered on Amazon, and they can sometimes be found in Target or Walmart near the chocolate chips.
*Do not use nonfat evaporated milk for this recipe.
*Try switching out the cinnamon chips to create another kind of fudge- butterscotch, chocolate, etc.