Directions:
Preheat oven to 375°F (190°C). Grease a 13 x 9 inch baking pan.
In a large bowl, beat together sugar, sour cream, butter, and eggs until creamy.
Blend in the mashed bananas and vanilla extract.
Add flour, baking soda, and salt. Blend for 1 minute. Stir in chopped walnuts.
Spread batter evenly into the greased pan. Bake for 25 minutes or until golden brown.
Allow brownies to cool slightly until warm (but not hot) before frosting.
For the Frosting:
In a large saucepan, heat butter over medium heat until it turns a medium brown color. Watch carefully.
Remove from heat, whisk in powdered sugar, adding milk gradually to achieve a smooth, spreadable consistency. Stir in vanilla.
Pour frosting over warm banana bread brownies and smooth with a spatula.
Allow to cool completely before cutting into squares.
Prep Time: 15 minutes | Cooking Time: 25 minutes | Total Time: 40 minutes
Kcal: 350 kcal per serving | Servings: 12 servings
