Lemon Bars

1 1/2 c. flour 1/2 c. powdered sugar 3/4 c. cold butter 4 eggs, slightly beaten 1 1/2 c. sugar 3 T. flour 1 tsp baking powder 1/2 c. lemon juice Heat oven to 350. Combine 1 1/2 c. flour and powdered sugar. Cut in butter until crumbly. Press onto bottom of lightly greased 9X13 inch pan. Bake 15 minutes Meanwhile, combine eggs, sugar, 3 tablespoons flour, baking powder and lemon juice. Mix well. Pour over crust. Bake 20 minutes or until golden. Cool. Store in refrigerator.