To make these delicious No Bake Cookies suitable, for those following a gluten-free diet it's important to choose the right kind of oats. Oats themselves don't contain gluten. They can sometimes be contaminated with gluten during processing. To ensure your cookies are truly gluten-free make sure to use oats that are certified as such. This simple change will allow you to savor the chewiness and wonderful taste of the original recipe while accommodating those, with gluten-free dietary requirements.