To make this Lemon Dump Cake gluten-free. Simply substitute the lemon cake mix. With a gluten-free lemon cake mix. Ensure all other ingredients. Including the lemon pie filling. And whipped topping. Are labeled gluten-free. This swap allows those with gluten sensitivities. To enjoy the same delightful, tangy-sweet flavors. Without compromising their dietary needs. Enjoy a safe. And a delicious treat!