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Peanut Butter Marshmallow White Chocolate Bars on white plate on a wood surface

Peanut Butter Marshmallow White Chocolate Bars

Super Easy. Cake Mix Base. This is a delicious recipe for Peanut Butter Marshmallow White Chocolate Bars. You only need a small piece!

  • Total Time: 41 minutes
  • Yield: 9-16 Bars 1x


  • 1 Yellow Cake Mix
  • 1 Stick of Softened Butter
  • 1 Large Egg
  • 1/2 Cup Creamy Peanut Butter
  • 3/4 Cup Marshmallow Creme
  • 14oz Can of Condensed Milk
  • 11 oz Bag of White Chocolate Chips
  • 3/4 Cup Mallow Bits


  1. Preheat oven to 350F and line a 9X13 pan with foil and spray with nonstick cooking spray or butter the pan. 
  2. In a medium-sized bowl mix together the cake mix, butter and egg until combined. You will end up with a thick dough. Press the dough into the pan.
  3. In a medium-sized bowl mix together the peanut butter, marshmallow creme, and condensed milk until combined. Pour over the dough. Top with white chocolate chips and mallow bits. 
  4. Bake for 24-26 minutes. Let cool in pan on a wire rack for at least 1 hour before serving. Enjoy 🙂 


Recipe slightly adapted from Picky Palate

  • Author: Elizabeth @ Confessions of a Baking Queen
  • Prep Time: 15
  • Cook Time: 26
  • Category: Dessert
  • Method: Bake
  • Cuisine: American

Keywords: cake mix recipes, cake mix bar, dessert with cake mix

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