Apple Cider Cinnamon Sugar Donuts ~the strong taste of apple really shines through in these donuts. The buttermilk is key and don't skimp on the flour or they will be sticky. Easy to make and easy to eat as well. Being just down the street from an orchard when I saw this recipe I just had to make it! These are best eaten warm out of the oven. To reheat them, wrap in a damp paper towel and microwave for 10 seconds. They stay fresh up to 7 days. Apple Cider Cinnamon Sugar Donuts can also be made as donut holes.