Gluten-Free Apple Cider Doughnuts

Preheat oven to 350°F and spray 2 doughnut pans with cooking spray.

Whisk together all dry ingredients (flour, baking soda, cream of tartar, baking powder, salt, cinnamon, sugar). Make a well in the center of the dry ingredients and add butter, vanilla, apple cider, and egg yolks.
Mix gently.

In a separate bowl, whisk egg whites together with a fork for a minute or two just to get them a bit fluffy. Add to bowl and stir.

Use a resealable bag with the tip cut off to carefully pipe the mixture into the pans. Be careful not to cover the center part.

Bake for about 9–10 minutes and let cool.

Mix the icing ingredients together. Add more sugar if your mixture is too thin or more milk if it’s too thick.
I kept my icing thin and dipped just the tops into the icing. It made a very thin glaze. If you prefer, make a thicker icing and pour it on top of the donuts.