1 1/2 c. flour
3/4 c. brown sugar
3/4 c. butter
1 c. brown sugar
2 tbsp. flour
1/2 tsp. baking powder
1/4 tsp. salt
2 eggs (lightly beaten)
12 oz. pkg. chocolate chips
1 tsp. vanilla

Mix first 3 ingredients as for pie crust. Pack into 9 x 13 inch pan. Bake at 350 degrees for 10 to 15 minutes. Mix remaining ingredients and pour over baked crust and bake at 350 degrees for 20 to 25 minutes. Cool slightly before cutting into bars.