Graham Cracker Cake

1/2 cup butter or margarine
1 cup granulated sugar
3 eggs, separated
1 (16 ounce) package graham cracker crumbs
1 1/2 cups milk
3 teaspoons baking powder

Cream butter, sugar and egg yolks; add crumbs, milk and baking powder. Mix well. Fold in egg whites. Bake in two (8-inch) round pans at 325 degrees F to 350 degrees F for 30 minutes.

Frosting:
1/2 cup butter or margarine
1 pound confectioners' sugar
1 egg
Lemon juice, to taste

Beat confectioners' sugar and egg until smooth. Add lemon juice to taste; beat in butter until creamy smooth. Frost cool cake.