Banana Bread Brownies

Ingredients:

• 1 ½ cups sugar
• 1 cup sour cream
• ½ cup butter, softened
• 2 eggs
• 1 ¾ cups (3 or 4) ripe bananas, mashed
• 2 tsp vanilla extract
• 2 cups all purpose flour
• 1 tsp baking soda
• ¾ tsp salt
• ½ cup chopped walnuts (optional)
• ½ cup butter (for brown butter frosting)
• 4 cups powdered sugar (for brown butter frosting)
• 1 ½ tsp vanilla extract (for brown butter frosting)
• 3 tbsp milk (for brown butter frosting)

Directions:

1. Heat oven to 375F. 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.
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).