To make this Triple Lemon Poke Cake gluten-free. Use a gluten-free lemon cake mix. In place of the regular cake mix. Ensure that the lemon Jell-O. And instant lemon pudding you use. Are labeled gluten-free. As some brands may contain gluten as a stabilizer. Additionally, double-check that your whipped topping. And any decorative sprinkles. Or garnishes. Are also gluten-free. By making these substitutions. You can enjoy a delicious, zesty lemon cake. That's safe for those with gluten sensitivities. Or celiac disease. Without sacrificing any of the flavor. Or texture.