Barbara Bush's Lemon Bars

Crust:
1 cup margarine
2 cups confectioners' sugar
2 cups all-purpose flour

Filling:
4 teaspoons lemon juice
Grated rinds of 2 lemons
4 eggs, well beaten
2 cups granulated sugar
1 teaspoon baking powder
4 tablespoons flour
1 cup shredded coconut

Mix margarine, confectioners' sugar and flour. Spread in 15 x 10-inch jellyroll pan. Bake at 350 degrees F for 15 minutes until pale tan. Cool.

Mix remaining ingredients. Pour over crust. Bake for 25 minutes at 350 degrees F. Cut into bars.