CRUST:

1/2 c. brown sugar
1/2 c. butter
1 c. flour

Blend all ingredients. Pat in 9x13 pan. Bake at 350 degrees for 10 minutes.

FILLING:

1 c. brown sugar
1 1/2 tsp. vanilla
2 tbsp. flour
1/2 tsp. salt
1 tsp. baking powder
2 eggs
1 pkg. chocolate chips

Pour filling over the baked crust. Sprinkle with chocolate chips. Bake 20 minutes at 350 degrees.