1 ready made graham cracker crust
1 (8 oz.) cream cheese, softened
1/3 c. sugar
1 (8 oz.) sour cream
2 tsp. vanilla
1 (8 oz.) Cool Whip

Beat cream cheese until smooth. Gradually beat in sugar. Blend in sour cream and vanilla. Fold in Cool Whip. Spoon into crust. Chill at least 4 hours to set. Garnish as desired.