I found one that adds peanut butter - its yummy! I also put them in the freezer for about 20 minutes before I eat. That makes it last longer in my opinion!
http://www.mizfrogspad.com/South_Beach_Diet/Ph1_Desserts.htm
Peanut Butter-Chocolate Ricotta Crème
Two servings.
1 cup low fat or part-skim ricotta cheese
1/2 teaspoon vanilla extract
2 or 3 packets Splenda
1/2 to 1 tablespoon natural peanut butter
1/2 to 1 tablespoon baking cocoa (or 1 to 2 tablespoons sugar-free chocolate syrup)
Mix as desired, put in 2 serving dishes, chill, and serve. If using chocolate syrup, you can pour on top instead of mixing in, if desired.