Base
1 1/4 cups graham cracker crumbs
1/4 cup sugar
1/4 stick melted butter
Mix ingredients together well and press onto bottom of an 8-inch pan with removable base. Bake at 350 F for 10 minutes.
Filling
2 x 8 oz packs of cream cheese
3/4 cup sugar
2 eggs plus one egg yolk
3/4 tsp vanilla essence
Beat all ingredients until smooth. Pour onto slightly cooled shell. Bake at 375 F for 20 minutes. Cool 15 minutes.
Topping
1 pint soured cream
1/2 cup sugar
1 tsp vanilla essence
Mix well and pour over cheesecake. Bake 10 minutes at 375 F.