1 pkg. Duncan Hines lemon or yellow cake mix
2 lbs. ricotta cheese
2 eggs
1 1/2 c. sugar
1 tsp. vanilla
1 can pineapple pie filling

Prepare cake according to package directions and pour into a greased 9x13 inch pan. Combine the remaining ingredients and spoon over the batter, smoothing evenly. Bake in a preheated 350 degree oven for 50 minutes. Cool in pan 10 minutes, then loosen sides with a spatula. Invert onto a large cake rack to finish cooling. Top with pineapple filling when completely cooled.