Hi Leslie, unfortunately, yeast-raised baked goods are notoriously tricky, both when it comes to gluten-free baking as well as grain-free baking, and it's unlikely to work well to substitute a grain-free flour blend into this recipe. If you do decide to give it a try, be sure to include the xanthan gum and eggs called for in this recipe, which help provide structure in the absence of gluten. You may also have to adjust the liquid in this recipe when you change the flour, since coconut flour is extremely absorbent. 

We do have some other grain-free options that you might find helpful. First, check out our Paleo Grain-Free Measure for Measure flour, which will work well as a 1:1 substitute for all-purpose flour in recipes that don't involve yeast. We also have some great grain-free recipes for you to choose from, including these Grain-Free Waffles and this Grain-Free Cheddar Pan Bread. 

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