Ingredients:
2 cups chocolate graham cracker crumbs
1/2 cup butter, melted
3 packages cream cheese
1 cup sugar
3 large eggs
1 cup sour cream
1 tsp vanilla
1½ cups chocolate chips
Instructions:
Preheat oven to 325°F.
Make crust, press into pan, and chill.
Beat cream cheese and sugar.
Add eggs one at a time, then sour cream and vanilla.
Fold in chocolate chips, pour over crust.
Bake for 1 hour. Cool and refrigerate overnight.