1 c. flour
1/2 tsp. baking powder
1/4 c. powdered sugar
1/2 c. butter
1 tbsp. grated orange or lemon peel

FILLING:

1 c. semi-sweet chocolate chips

TOPPING:

3 eggs
3/4 c. sugar
2 tbsp. lemon juice or 3 tbsp. orange juice
1 tbsp. grated orange or lemon peel
Dash of nutmeg
3 tbsp. flour
1/2 tsp. baking powder
Powdered sugar for garnish

Measure flour and baking powder in a bowl. Add butter and either with pastry blender or fingers, blending butter into flour mixture until consistency of cornmeal. Add powdered sugar and orange or lemon peel. Press mixture evenly onto bottom of an 8 inch square baking pan. Prebake crust for 7 minutes at 350 degrees. Spread chocolate chips over hot crust. As soon as chips melt, spread chocolate evenly over crust. If chips don't melt quickly, put pan back in oven for a few minutes. Combine all remaining ingredients in a bowl. Mix thoroughly. Pour mixture over chocolate layer. Bake at 350 degrees for about 25 minutes or top is lightly browned. Cool. Dust with powdered sugar. Cut into even squares.