1Make your graham cracker crust or oreo cookie crust and bake 10 minutes and set aside. Make it in a deep dish 10" pie plate.
2Beat cream cheese and sugar in large bowl with mixer until well blended. Add eggs and vanilla; beat well. Stir in 1 2/3rds cups mini chocolate chips; pour into crust. Bake at 450 for 10 minutes without opening oven door, reduce temperature down to 250; continue baking for an additional 30 minutes or until set. Remove from oven and cool completely. Cover and refrigerate until thoroughly chilled, 8 hours.
3Place 1/3 cup chips and whipping cream in small microwave safe bowl. Microwave for 30 seconds at a time stir and repeat until mixture is melted and smooth when stirred. Cool slightly and spread over top of the cheesepie. Refrigerate until ready to serve.