Banana Bread with Brown Butter Frosting

1 1/2 c, sugar
1 c. sour cream
1 stick butter, softened
2 eggs
4 overripe bananas, mashed
2 t. banana flavoring
2 c. SR flour
1/2 c. chopped pecans
Frosting:
1/2 c. butter
4 c. confectioners sugar
3 T. milk
1 1/2 t. banana flavoring

Preheat oven to 350 degrees. Spray a 15x10x1" pan. Beat sugar, sour cream, butter, and eggs together with electric mixer until creamy. Beat in bananas and flavoring. Add flour. Stir in pecans. Spread in sprayed pan. Bake about 27 minutes, until golden. Cool. Melt 1/2 c. butter until bubbling and brown (3-5 minutes). Remove from heat. Whisk confectioner's sugar, milk, and banana flavoring into butter until smooth. Spread over banana bars.