(recipe via Martha Stewart)
3/4 cup all-purpose flour
1/3 cup packed light-brown sugar
3 tablespoons granulated sugar
Pinch of salt
6 tablespoons cold unsalted butter (cut into small pieces)
2. While the crust is refrigerating, make the crumble topping. In a medium bowl, mix flour, light-brown sugar, granulated sugar, and salt. With your hands, work in butter until large, moist clumps form. Chill, covered, until the pie crust is done refrigerating.