You could probably use THM Baking Blend (not nut free) in these, but you'll need more than 1½ cups as it's not as "dry" as my Baking Mix is. I would use at least 1¾ cups, and maybe closer to 2 cups. The batter should be fairly thick (you'll have to spread it with a spatula to smooth it out). Just experiment. :) The baking time will vary from what I have listed in the recipe.