Linked here is the recipe for the “Forever Cookies” by Vani Hari (also known as Food Babe). She calls these Forever cookies because she says they are so good that you can eat them forever. Plus they are healthy too if you look at the ingredient list.
Most of the ingredients you can find as gluten free. Make sure you get gluten-free oats and gluten-free baking powder, which not all brands are gluten-free. See which brands of baking powder is gluten free here. Or make your own. Also make sure the baking powder is aluminum free.
For those with food sensitivity, there might be corn and potato starches in the baking powder. The ingredients are vegan, so there are no eggs or dairy.