1 c. flour
1/2 c. butter, soft
1/4 c. confectioners sugar
2 eggs
1 c. sugar
1/2 tsp. baking powder
1/4 tsp. salt
2 tbsp. lemon juice

Heat oven to 350°F. Cream flour, butter and sugar together. Press in bottom of 9x9x2 pan.

Bake 20 minutes. Beat remaining ingredients until light and fluffy, about 3 minutes. Pour over hot crust and bake 25 minutes longer. Cool and cut into 2 inch squares.