Transform this delightful Easy Chocolate Mayonnaise Cake into a gluten-free wonder with an easy swap! Replace the all-purpose flour with your favorite gluten-free flour blend (preferably one that includes xanthan gum to mimic the texture and binding properties of gluten). Remember, gluten-free flours can be a bit more absorbent, so you might want to add an extra splash of water if the batter seems too thick.