Banana Blondie with Peanut Butter Frosting

I’ve been a new recipe kick for a little while now, and the other night when I was restless seemed the perfect time to try another. This time it was banana blondies. I don’t typically make banana desserts other than banana bread because for some reason I think they will taste artificial, which is never good. I decided to break out of my comfort zone and try this blondie recipe because when I looked at the ingredients I knew that it couldn’t possibly taste artificial. The original recipe came from, but instead of using the browned butter frosting, I thought it would be delicious with a peanut butter frosting and boy was I right.


  • 1/2 cup butter, melted and if desired browned
  • 1 cup light brown sugar
  • 1 egg
  • 1 1/2 teaspoon vanilla
  • 1/4 teaspoon salt
  • 1 cup flour
  • 1/2 cup mashed banana (1 medium banana)


  • 3/4 cup smooth peanut butter
  • 1/4 cup softened butter
  • 1 teaspoon vanilla
  • 1-2 tablespoons milk
  • 1 cup powdered sugar

Preheat oven to 350°. Line an 8×8 baking dish with foil and spray with cooking spray. Set aside. In bowl of stand mixer combine melted (or browned) butter and sugar. Mix until combined. Add in egg and vanilla and continue mixing until incorporated. Stir in salt, flour and banana until batter is smooth and even. Spread in prepared pan. Bake for 25-30 minutes until center is set. Transfer pan to wire rack to cool. Frost the blondies when they are mostly cooled.

To make the frosting, cream together peanut butter and butter until smooth. Add in the vanilla and powdered sugar. Incorporate fully, then add in milk until the frosting reaches the desired consistency. Spread over cooled bars.

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