We put blueberry pie filling on top of each slice.
This is another highly rated recipe from allrecipes.com by the way.
15 graham crackers, crushed
2 tablespoons butter, melted
Mix and press into the bottom of a greased spring form pan
4 (8 ounce) packages cream cheese
1 1/2 cups white sugar
Cream these together until smooth then add:
3/4 cup milk
1 cup sour cream
1 T vanilla extract
1/4 cup all-purpose flour
Mix all until smooth, pour over crust. Bake at 350 for 1 hour (mine took 50 mins)
Then turn off your oven and forget about it for 5-6 hours!
The best way to avoid cracks is: Don't open the oven while it's cooking, be sure to grease the sides of the pan well, and let it cool slowly in the oven for 5-6 hours before putting it in the fridge.