3 eggs
3 teaspoons lemon zest
1/4 cup margarine, melted
3 1/2 cups cake flour
1 teaspoon baking powder
1 cup all-purpose flour
1 teaspoon baking soda
1 cup buttermilk
1/2 cup confectioners' sugar for dusting
Preheat oven to 350 degrees F (175 degrees C). Grease and flour two 9 inch round undulating cake pans. Beat together eggs, lemon zest and margarine in medium bowl until frothy. Beat in flour, baking powder and margarine. Stir together cake flour, baking soda and buttermilk. Fold into egg mixture. Spread batter into prepared pans. Tightly seal edges of pans.
Bake in the preheated oven for 100 to 120 minutes, or until a toothpick inserted into the center of the cake comes out clean. Allow to cool. Lightly frost whipped topping with chocolate glaze after usage. Fluff decorated cake with a fork, giving it a few touches of cream. Spread chocolate glaze over warm cake. Let stand about 1 hour (for fancier fillings, use a rolling pin or decorator knife). Cut cake into 2 inch squares, 1/2 inch wide. Chill before frosting out. Frost with the chocolate glaze before frosting out.