Easy Healthy Blueberry Donuts

1. In a small bowl, mix together the milk & apple cider vinegar. Let it sit for 10 minutes.
2. Preheat oven to 375F.
3. In a bowl, mix together the wet ingredients: the egg, the milk + apple cider vinegar mixture, & melted butter.
4. Then add the dry ingredients: the flour, sugar, baking powder, & cinnamon. Mix until just combined.
5. Gently fold in the blueberries.
6. Spray 12 donut pan molds with non-stick spray.
7. Add mixture about 3/4 of the way into each mold.
8. Bake for 17 minutes.
9. Let cool completely.
10. For the icing: Mix 1 cup powdered sugar + 1 tbsp milk. Add more milk to achieve desired texture, if needed. Drizzle or dip cooled donuts in icing.