1 box marble cake mix
2 lb. ricotta
1 c. or 1/2 c. sugar (depending on how sweet you want it)

Make cake mix according to directions. Mix together all ingredients in bowl. Grease and flour lasagna pan. Put marble cake mix on the bottom of pan. Swirl chocolate through. Put ricotta mixture on top of cake mix. Bake at 350 degrees for 1 hour. Check with toothpick to be sure it is done.