Chop graham crackers and walnuts in a food processor right up until medium to high-quality crumbs kind. Combine in a bowl with cinnamon and melted butter. Press crumbs into the bottom of foil muffin wrappers put in a very muffin pan or into The underside of the nine″ spring kind pan if you prefer 1 cake. Idea: Foil wrappers are better than paper