In a large bowl stir together the graham cracker crumbs, brown sugar, butter, and cinnamon until fully combined. Firmly press the crumbs into an 8 to 10-inch springform pan. I like to form the crust along the sides as well, use a flat bottomed glass or measuring cup to help press down the crumbs. Place this in the freezer while you assemble the filling.
2 ½ cups graham cracker crumbs, ¼ cup light brown sugar, 9 tablespoons unsalted butter, ½ teaspoon ground cinnamon