1 c. butter
1/2 c. sugar
1/2 c. brown sugar
2 c. flour
3 egg yolks
3 tbsp. water
1 tsp. baking powder
1/4 tsp. baking soda
1/4 tsp. salt
1 tsp. vanilla
1 pkg. chocolate chips
3 egg whites
1 1/2 c. brown sugar

Cream sugar, butter; add egg yolks, vanilla and water. Stir together dry ingredients, add to mixture. Spread thin on 12 x 18 inch ungreased cookie sheet. Sprinkle with chocolate chips. Beat egg whites until foamy, then add 1 1/2 cups brown sugar (1/4 at a time). Beat until stiff. Spread over chocolate chips. Bake for 30 minutes at 350 degrees. Cool, cut into bars.