To make this recipe gluten-free. Ensure that the vanilla instant pudding mix is certified gluten-free. Most Jell-O brand pudding mixes are gluten-free. But always check the label to be sure. The rest of the ingredients—fresh pineapple, mandarin oranges in light syrup, and bananas. Are naturally gluten-free. Making this safe. And delicious option. For those with gluten sensitivities.