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Frosted Peanut Butter Bars

Frosted Peanut Butter Bars

Yields: 24 bars | Prep Time: 20 mins | Cook Time: 12–15 mins | Temp: 350°F

Forget the store-bought cups—these CMM Frosted Peanut Butter Bars are the real deal! We’ve got a chewy GF oat base, a sweetened double-thick peanut butter layer, and a silky chocolate buttercream on top. It's the ultimate clean-eating indulgence!

Ingredients:

The Oat Base:

  • 1 cup butter, softened
  • 1 cup brown sugar
  • 1 cup white sugar
  • 2 eggs
  • 1 tsp vanilla
  • 1 tsp baking soda
  • ½ tsp salt
  • 2 cups Gluten-Free Flour
  • 2 cups Gluten-Free Quick Oats

The Creamy Peanut Butter Layer:

  • 1 ½ to 2 cups creamy peanut butter
  • ¼ cup powdered sugar

The Chocolate buttercream Frosting:

  • ½ cup butter, softened
  • 3 cups powdered sugar
  • 1/3 cup cocoa powder
  • ¼ cup milk (or dairy-free alternative)
  • 1 tsp vanilla

Instructions:

  1. Preheat your oven to 350°F and grease a 9x13-inch baking pan.
  2. Cream the softened butter, brown sugar, and white sugar together. Add eggs and vanilla, mixing until smooth.
  3. Stir in the baking soda, salt, GF flour, and GF oats. Mix until a dough forms.
  4. Press the entire dough mixture into the bottom of the pan. Bake for 12–15 minutes until the edges are just golden. Do not overbake!
  5. Prepare the PB Layer: While the base is warm, whisk together the peanut butter and 1/4 cup powdered sugar.
  6. Spread: As soon as the base comes out of the oven, spread the peanut butter mixture over the top. Let the bars cool completely.
  7. Make the Frosting: In a separate bowl, beat the softened butter, 3 cups powdered sugar, cocoa powder, vanilla, and milk until light and fluffy.
  8. Finish: Spread the chocolate buttercream over the cooled peanut butter layer.
  9. Set: Chill in the fridge for 30 minutes to help the layers set before slicing.