Ingredients
- 1-1/2 c. sugar
- 1 c. sour cream
- 1/2 c. butter, softened
- 2 eggs
- 1-3/4 (3 or 4) ripe bananas, mashed
- 2 tsp. vanilla extract
- 2 c. all purpose flour
- 1 tsp. baking soda
- 3/4 tsp. salt
- 1/2 c. chopped walnuts (optional)
Brown Butter Frosting Ingredients
- 1/2 c. butter
- 4 c. powdered sugar
- 1-1/2 tsp. vanilla extract
- 3 tbsp. milk
Directions
- Heat oven to 375F.
- Grease and flour 15×10-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 (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).
