Chocolate Swirl Cheesecake

Ingredients

• 1 cup graham crackers

• ¼ cup melted butter

• 2 Tbs. sugar

• 15 oz part skim ricotta cheese

• 8 oz nonfat cream cheese

• 8 oz. plain nonfat yogurt

• 1 cup sugar

• 2½ Tbs. flour

• 2½ Tbs. vanilla

• 1 egg

• 2 egg whites

• 2 Tbs. unsweetened cocoa

• 1½ Tbs. butter

Preparation

Combine first three ingredients; press mixture into bottom of 9 inch springform.  Bake at 350 for 8 minutes.  Cool completely.

Process ricotta and next five ingredients until smooth.  Add egg and egg whites;  process until just blended.  Reserve ½ cup of mixture; pour remaining into prepared crust.  Combine reserved cheese mixture, cocoa, and 1 ½ Tbs. of margarine; drizzle over mixture in pan.  Swirl with a knife.  Plane pan in a shallow baking dish.  Add hot water to dish to depth of 1 inch.  Bake at 325 for 1 hour or until almost set.  Turn off oven;  partially open door.  Leave cheesecake in oven for 1 hour.  Remove from oven; let cool.  Cover and chill.