1 (8 oz.) pkg. cream cheese
1/3 c. sugar
1 c. sour cream (1/2 pt.)
2 tsp. vanilla flavor
1 (8 oz.) Cool Whip (Bird's Eye)
1 Keebler graham cracker crust

Beat cheese until smooth; gradually beat in sugar. Blend in sour cream and vanilla. Fold in whip cream. Set in crust for 4 hours. Refrigerate.