Bars:
1/2 c. Butter, softened
1 1/4 c. Granulated Sugar
2 Eggs
1/2 tsp. Vanilla
2 Bananas, mashed
1/2 c. Sour Cream
2 c. Flour
1 tsp. Baking Powder
1/2 tsp. Soda
1/4 tsp. Salt
1/2 c. Walnuts

Cream butter, sugar, eggs and vanilla.
Add sour cream and bananas.
Mix in flour, baking powder, soda, salt and walnuts.
Pour into greased 9″ x 13″ pan.
Bake 30-35 minutes at 350°F.
Let cool.
Frost and cut into bars.
Keep refrigerated.
Best eaten next day.

Frosting:
1/4 c. Butter, softened
2 c. Powdered Sugar
1-2 Tbsp. Maple Syrup

Beat together butter and powdered sugar.
Add maple syrup a little at a time until spreading consistency.