Donuts are a big favorite in the breakfast and snack worlds. Unfortunately, there are tons of people who can't have gluten, whether be it for dietary or allergy reasons. Luckily, we've got the perfect solution. These fluffy and citrusy donuts are not only free of refined sugar, but they're also gluten-free, grain-free, and dairy free. Plus, when was the last time you had a key lime donut? Tomorrow, your answer will be yesterday. Check out the full recipe!