You can prepare a basic pie crust with as little as two ingredients: crushed vegan biscuits/cookies and vegan butter or coconut oil. You could use graham crackers, Oreos (about 24), or other biscuits/cookies. Their size will change exactly how many you need. Crush them in a food processor or in a Ziplock/Stasher bag using a rolling pin, then combine with the vegan butter or coconut oil, one tablespoon at a time, until it’s a wet-sand consistency. Prepare the crust in advance, leaving it to chill and set overnight in the fridge.