They can be! It totally depends on the individual ingredients you choose for your parfait. Yogurt is naturally gluten-free, but some brands may contain gluten in the flavoring. So, be sure to check for the gluten-free label. The same idea applies to the granola. Remember to check for the GF-certified symbol, and you’re good to go! And, of course, the fresh berries are 100% gluten-free.