1 box marble cake mix
4 eggs
2 c. Ricotta cheese
1 1/2 c. sugar
1 tsp. vanilla

Mix cake as directed on box. Pour into 9 x 13 inch pan. Do NOT grease or flour. Beat together eggs, Ricotta cheese, sugar and vanilla. Pour over batter and bake 1 hour at 350 degrees in preheated oven. Cool overnight. Cover with Cool Whip and shaved chocolate. Refrigerate.