Step 1

Preheat oven to 375.

Step 2

Grease your donut pans and set aside.

Step 3

Combine your dry ingredients (flour, sugar, baking powder, and cinnamon in a large mixing bowl.

Step 4

Add egg, buttermilk, and melted butter. Stir until just combined. (Do not overmix). Gently fold in blueberries.

Step 5

Using a spoon, fill each donut pan 2/3 full.

Step 6

Bake for 15-17 minutes or until golden brown.

Step 7

Combine the ingredients for the glaze and whisk until smooth.

Step 8

Remove the donuts from the oven and allow to cool for 5 minutes before removing them from the pan. Drizzle glaze over the still-warm donuts and allow to cool before storing in an airtight container.