In a medium bowl, combine 1 cup plus 1 tablespoon all-purpose flour, 1/2 cup cold unsalted butter, 1/2 cup granulated sugar, 1/4 teaspoon kosher salt, and a pinch of ground cinnamon. Work together with your fingertips until the mixture is well combined and crumbly, with both lima bean- and pea-sized clumps. Place in the refrigerator until ready to use.