Crumb crusts are simple, flavorful, quick-to-make crusts. They are typically used in two types of prep arations: pudding or cream pies and cheesecakes. Graham crackers are most commonly used as the base for crumb crusts, but other types of cookies may be used for different flavors.
The crumbs are sweetened as necessary and blended with butter; sometimes a small amount of egg white is added to help make the crust hold together after baking. The crumb mixture is then pressed into an even layer in the pie or other baking pan and prebaked to evaporate some moisture and make the crust more flavorful and crisp.