Crush graham crackers into fine crumbs
Measure 1 1/2 cups crumbs for a 9-inch crust
Mix crumbs with 1/3 cup melted butter
Add 1 to 2 tablespoons sugar if desired
Stir until the mixture looks like wet sand
Press the mixture firmly into a pie dish or springform pan
Pack the crumbs evenly across the bottom and up the sides
Chill the crust for 30 minutes, or bake at 350°F for 8 to 10 minutes
Cool completely before adding filling