Two Layer Cheesecake

My grandmother's recipe ... this is my all-time favorite cheesecake! Crust: 16 graham crackers 2 Tablespoons sugar 4 Tablespoons butter Filling: 2 Eggs ½ cup sugar 16 oz cream cheese ½ teaspoon Vanilla Topping: 1 ½ cups sour cream 2 Tablespoons sugar ½ teaspoon vanilla Prepare the crust by crushing the graham crackers in a plastic bag. Combine the crushed graham crackers, sugar and butter and mix well. Press the mixture into a cheesecake pan. Preheat the oven to 350° F. Prepare the filling: Beat the eggs well. Blend in the other ingredients until well mixed and pour into the graham cracker crust. Bake 20 minutes at 350° F. Turn the oven off and cool in the oven with the door open for 15 minutes. Remove from the oven. Preheat the oven to 475° F. Prepare the topping: Mix all ingredients until well blended. Pour over cream cheese filling. Bake 5 minutes at 475° F. Remove from oven and cool to room temperature. Chill in refrigerator for at least 12 hours before serving.