Banana Bread Brownies

• Preheat oven to 375°F (190°C). Grease and flour a 9×13-inch baking dish.
• In a large bowl, cream together the butter and sugar until light and fluffy.
• Beat in the eggs, one at a time, then stir in the sour cream and vanilla extract.
• Combine the flour, baking soda, and salt; gradually stir into the butter mixture until well blended.
• Fold in the mashed bananas.
• Spread the batter evenly into the prepared baking dish.
• Bake for 20 to 25 minutes, or until a toothpick inserted into the center comes out clean. Allow to cool completely in the pan on a wire rack.

For the Frosting:

1. In a medium saucepan, heat the butter over medium heat until boiling. Let the butter turn a delicate brown and remove from heat immediately.
2. Pour the butter into a bowl and add the powdered sugar, vanilla extract, and milk. Beat until smooth and creamy.
3. Spread the frosting over the cooled brownies before cutting into squares.