To make the crust, in a medium bowl, whisk together flour, sugar, and salt. Add cold, grated butter and, using your fingers, work the butter into the flour mixture. Quickly break the butter down into the flour mixture, some butter pieces will be the size of oat flakes.

• 2 1/2 cup all-purpose flour
• 1 tablespoon granulated sugar
• 3/4 teaspoon salt
• 1 cup (2 sticks) unsalted butter, cold, grated on a box grater
• 6 tablespoons cold water plus 2 to 3 tablespoons more if your dough is dry