You can easily turn this Limoncello Ricotta Cake into a gluten-free delight and have some fun testing with other types of flour. Try utilizing a high-quality gluten-free flour blend that contains xanthan gum. This element helps imitate the texture and structure that gluten delivers. If your selected blend doesn't already include xanthan gum you can add a 1/4 teaspoon to the mixture. Keep in mind that gluten-free flours might soak liquid so you may require to add an extra liquid to acquire the perfect batter consistency.