Mix flour, powdered sugar and butter and pat into an 8 ½ x 11 inch pan. Bake at 350 degrees for 12 minutes.
Beat eggs with sugar. Mix in remaining ingredients. Pour over first mixture. Bake 25 minutes at 350 degrees. Cool and dust with powdered sugar. Cut into small squares.
Recipe may be doubled and baked in 9 x 13 inch pan. Bake crust 20 minutes instead of 12.