Banana Bread Brownies

Caught this on facebook and submitted here for safekeeping. prep time and number of servings are estimations.

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.

Spread batter evenly into pan.

Bake 20 to 25 minutes or until golden brown.

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.

Add powdered sugar , vanilla extract and milk.

Whisk together until smooth.

Using a spatula , spread the brown butter frosting over the warm bars.

sugar, sour cream, butter, eggs, bananas, vanilla extract, all-purpose flour, baking soda, salt, walnuts, powdered sugar, milk