Preheat the oven to 400 degrees and lightly coat donut pans with cooking spray.
In a large bowl whisk together the flour, cinnamon, baking powder, soda and salt.
In a smaller bowl, combine the oil, sugar and egg. Add this mixture to the dry ingredients and stir to combine. Fold in the apple cider until just combined.
Using a piping bag, fill the donut pan half way. Bake the donuts 8 minutes for full sized, 6 minutes for mini donuts.
Let the donuts sit in the pan for a few minutes before glazing.
Whisk the apple cider, powdered sugar and corn syrup until smooth. Dip each donut in the glaze. Top with a cinnamon-sugar mixture if desired.
Recipe by Friday is Cake Night at https://www.fridaycakenight.com/2017/02/baked-apple-cider-donuts/