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A cookie crumb crust is a simple, no-bake pastry base made from finely crushed cookies (like graham crackers, digestive biscuits, or Oreos) mixed with melted butter and sometimes sugar. It's a staple in American and Western dessert-making, providing a sweet, textured foundation for pies, tarts, and cheesecakes.
This crust is typically high in carbohydrates and fat (from the butter), with minimal protein. A standard slice from a 9-inch pie contributes roughly 150-200 calories, primarily from simple sugars and saturated fat.
Culturally, it's a beloved 'hack' that democratized pie-making by eliminating the need for traditional pastry skills and equipment. Nutritionally, it's a prime example of how a simple fat-and-sugar binder can transform a dry ingredient into a structurally sound, flavorful component.