from: Alyssa Ullo, Meet Chicago Northwest

Serves: 15

Ingredients (Brownies):

  • 1 1/2 cups sugar
  • 1 cup sour cream
  • 1/2 cup butter, softened
  • 2 eggs
  • 3-4 bananas, mashed
  • 2 teaspoons vanilla extract
  • 2 cups all-purpose flour
  • 1 tsp baking soda
  • 3/4 tsp salt
  • 1/2 cup walnuts, chopped (optional)

Ingredients (Frosting):

  • 1/2 cup butter
  • 4 cups powdered sugar
  • 1 1/2 tsp vanilla extract
  • 3 Tbsp. milk

Directions:

  1. Heat oven to 375°F Grease and flour 15x10-inch jelly roll pan. For the bars, in a large bowl, beat together sugar, sour cream, butter, and eggs until creamy. Blend in bananas and vanilla extract. Add flour, baking soda, salt, and blend for 1 minute. Stir in walnuts (optional).
  2. Spread batter evenly into pan. Bake 20 to 25 minutes or until golden brown.
  3. Meanwhile, for frosting, heat butter in a large saucepan over medium heat until boiling. Let the butter turn a delicate brown and remove from heat immediately.
  4. Add powdered sugar, vanilla extract and milk. Whisk together until smooth (it should be thicker than a glaze but thinner than frosting). Using a spatula, spread the brown butter frosting over the warm bars (the frosting will be easier to spread while the bars are still warm).

Original recipe from food.com.