Double Layer Chocolate Cheesecake

16 oz cream cheese
1/2 c sugar
1/2 tsp vanilla
2 eggs
3 square semi sweet chocolate, melted and cooled

beat cream cheese, sugar, vanilla. Add eggs one at a time until blended. Remove 1 c batter and mix with chocolate. Pour into crust, top with plain batter. Bake 40 min at 350.