For the filling, combine cream cheese, sugar, eggs, and vanilla in a large bowl. Beat until smooth.
Transfer filling mixture to the graham cracker crust and bake for 35 minutes.
While the filling bakes start on the topping. In a medium sized mixing bowl, combine sour cream, sugar, and vanilla.
Remove pie from oven after 35 minutes and raise the temperature to 450 degrees F. Pour the topping mixture onto the pie and return to oven for 5 additional minutes.
