Any vegetable oil or butter can replace canola oil.
Rice flour can replace potato starch.
Tofu can replace ricotta cheese. Pulverized Nut-quik and dry baby formulas, such as Isomil, Prosobee, and Pregestimil, may be used in place of dry milk for soy and lacto intolerance. Egg Replacer can replace eggs. To substitute for 3 eggs, use 4 tablespoons dry egg replacer, mixing with the dry ingredients. Use a total of 2 cups water with the wet ingredients.