1 graham cracker pie crust
1 (8 oz.) pkg. cream cheese
1/3 c. sugar
1 c. sour cream
1 tsp. vanilla
1 (8 oz.) Cool Whip
1 c. mini chocolate chips
Whipped topping, chocolate shavings or fruit for garnish (optional)

Beat cream cheese until smooth, gradually beat in sugar. Blend in sour cream and vanilla. Fold in Cool Whip, blending well. Stir in mini chocolate chips. Spoon into crust. Chill until set, at least 4 hours. Garnish with whipped topping, chocolate shavings or fruit if desired.