Banana Bars

3/4 cup unsalted butter (1 1/2 sticks), room temperature

2/3 cup light brown sugar

2/3 cup granulated sugar

1 tsp vanilla

2 medium bananas, mashed

1 egg

2 cups flour

2 tsp baking powder

1/2 tsp salt

12 oz package MINI chocolate chips

Preheat oven to 350F. Cream butter and sugars in large bowl. Add egg, vanilla, and mashed bananas. Slowly beat in dry ingredients. Stir in chocolate chips. Spread into greased 9 x 13 pan. Bake for about 30 minutes or until toothpick inserted in middle comes out clean. Cool completely, then sprinkle with powdered sugar if desired.