1 box fudge marble cake mix
2 lbs. ricotta cheese
1/4 c. sugar
4 eggs
1 tsp. vanilla
1 (3 3/4 oz.) box instant chocolate pudding
1 c. milk
1 (8 oz.) Cool Whip for topping

Mix cake as directed on box. Pour into greased and floured 9 x 13 inch pan. In separate bowl combine ricotta, sugar, eggs and vanilla; mix well. Spoon over unbaked cake top. Bake at 350 degrees for 1 hour. Cool. Mix pudding with milk, fold in whipped topping (Cool Whip). Spoon over cake and refrigerate.