Instructions Prepare the crust: In a large bowl, mix the flour, salt, and sugar. Add the cold butter cubes and cut them into the flour mixture using a pastry blender or your hands until the mixture resembles coarse crumbs.
Mix Filling Ingredients: In a large bowl, combine the sliced apples with granulated sugar, brown sugar, cinnamon, nutmeg, allspice, lemon juice, and flour. Toss to coat the apples evenly.
Roll Out Top Crust: Roll out the second disk of dough and place it over the apples. Trim the excess dough and crimp the edges to seal.
Grill Setup: If using a gas grill, turn off the burners directly under the pie and keep the surrounding burners on medium-high. For a charcoal grill, move the coals to one side and place the pie on the opposite side.
Check Temperature: Use an oven thermometer to ensure the temperature remains around 375°F (190°C) throughout the grilling process.
Rest Time: Remove the pie from the grill and let it cool on a wire rack for at least 2 hours before serving. This allows the filling to set properly and the flavors to meld.