This recipe calls for a food processor, but if you don't have one, you can mix this by hand. Try a pastry cutter or two forks. It will take longer, but it'll work! I've adapted this recipe to be vegan by substituting Earth Balance Buttery Sticks for the butter and it turns out perfect. Keep your ingredients COLD for best results -- I normally keep mine in the freezer. This recipe can be doubled with no issues. Keep extra dough wrapped in plastic in the freezer.