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White Chocolate Marshmallow Cake Bars

Yellow cake bars with an ooey gooey marshmallow filling and white chocolate chips through out. These are delicious!
Author Life in the Lofthouse

Ingredients

  • CAKE LAYER 1st layer
  • 1/2 cup butter softened
  • 1 box 18 oz Yellow Cake mix
  • 1 egg
  • 1 teaspoon vanilla
  • MARSHMALLOW LAYER 2nd layer
  • 3/4 cup marshmallow creme
  • 1/3 cup creamy peanut butter
  • 1 can 14 oz sweetened condensed milk
  • 1 teaspoon vanilla
  • WHITE CHOCOLATE CHIPS 3rd layer
  • 1 12 oz bag white chocolate chips
  • WHITE CHOCOLATE VANILLA FROSTING
  • 1/4 cup butter
  • 1/3 cup white chocolate 2 baker squares or white chocolate chips
  • 2 cups powdered sugar
  • 2 Tablespoons whole milk or cream
  • 1 teaspoon vanilla

Instructions

  • Preheat oven to 350 degrees. Line a 9×13 baking pan w/ foil and coat well with cooking spray. Set aside.
  • FOR 1ST LAYER: In a large bowl add cake mix, softened butter, egg and vanilla. Mix well with hands or spoon until well combined. (you may need to use a tablespoon of water to help combine)
  • Press dough into prepared pan.
  • FOR 2ND LAYER: Mix all 2nd layer ingredients together in a medium bowl. Mix until combined, then pour over dough.
  • FOR 3RD LAYER: Sprinkle the white chocolate chips evenly over 2nd layer.
  • Bake for 20-23 minutes. Center may seem jiggly but will set while it cools. DONT OVERBAKE!
  • While bars are baking, make frosting. Add butter and white chocolate to a microwave-safe bowl. Heat in 30 second increments until slightly melted. Stir together until melted. Add powdered sugar, cream and vanilla. Stir until smooth.
  • Remove bars from oven and let cool 5-10 minutes and then drizzle with frosting. Let bars cool completely before serving. (I refrigerated mine to have them cool faster) Cut into squares and serve!

Notes

Adapted from Avery Cooks