Ingredients:

3/4 Butter
2/3 Margarine
2/3 Granulated Sugar
1 Brown Sugar
1 Egg
2 Vanilla
2 Bananas
2 Flour
1/2 Baking Powder
1 Salt

Directions:

Preheat oven to 350°.
Spray 9×13 pan with cooking spray.
In a large mixing bowl, cream butter, granulated sugar, and brown sugar.
Add egg and vanilla and mix well.
Stir in mashed bananas.
Add flour, baking powder, and salt.
Mix well. Stir in chocolate chips.
Pour into prepared 9×13 pan.
Bake for 25 minutes.
Let cool and cut into bars.