To make this Fresh and Easy Apple Salad gluten-free. Ensure all your ingredients. Are certified gluten-free. While most of the ingredients like apples, celery, grapes, pecans, and cranberries. Are naturally gluten-free. It's important to check the labels on your mayonnaise and brown sugar. For any hidden gluten. Or cross-contamination. Opt for brands that specifically state they are gluten-free. To keep your salad safe. And delicious for everyone to enjoy!