1 pkg. (8 oz.) cream cheese, softened
1/3 c. sugar
1 c. sour cream
2 tsp. vanilla
8 oz. Cool Whip
Graham cracker crust
Optional - fresh strawberries

Beat cream cheese until smooth. Gradually beat in sugar. Blend in sour cream and vanilla. Fold in Cool Whip well. Spoon into crust. Chill at least 4 hours. Garnish with strawberries if desired.