Vanilla Mousse Cheesecake

40 nilla wafers
3 tbsp. butter
4 pkg. cream cheese, divided
1 c. sugar, divided
1 tbsp. plus 1tsp. vanilla
3 eggs
1 tub cool whip, thawed

Heat oven to 325. Mix wafer crumbs and butter; press onto bottom of 9 in spring form pan.

Beat 3 pkg. cream cheese, 3/4 c. sugar, and 1 tbsp. vanilla with mixer until well blended. Add eggs, 1 at a time mixing on low speed after each just until blended. Pour over crust.

Bake 50 to 55 mins. or until center is almost set. Run knife around rim of pan to loosen cake; cool completely in pan.

Beat remaining cream cheese, sugar, and vanilla with mixer in larger bowl until well blended. Whisk in cool whip; spread over cheesecake. Refrigerate 4 hours. Remove rim of pan before serving cheesecake. Garnish with fresh berries if desired.