1 (8 oz.) pkg. cream cheese
1/2 c. mayonnaise
1/2 c. sugar
2 eggs
1 tsp. vanilla
1 (6 oz.) pkg. melted semi sweet chocolate chips

Cream together the cream cheese and mayonnaise. Add remaining ingredients. Pour into chocolate (ready made) crust. Put on baking sheet and bake 30 to 45 minutes at 350 degrees.