• Heat oil in a deep fryer to 375 degrees F.

For the donuts:

• Whisk flour, sugar, baking powder, cinnamon, nutmeg and salt, in a large bowl.
• In another bowl, whisk egg, milk and vanilla extract.
• Stir melted butter into flour mixture forming small crumbs.
• Stir egg mixture into flour mixture. Add in blueberries.
• Place dough on a well floured surface, sprinkle flour generously on the dough as you roll it out. Sprinkle more flour as needed. Roll out gently to about 1/2 inch thick. This is a very soft dough.
• Cut donuts using a donut cutter.
• Use a long flat spatula, like you would flip an egg with, (dusted with flour) to support them and move them to a piece of parchment paper.
• Repeat with the dough scraps until all the dough is used
• Use the long flat spatula again to move the donuts into the oil. Fry donuts 1 - 2 at a time, about 1 ½ - 2 minutes per side. Place on a wire rack over a baking sheet.

For the glaze:

• Whisk powdered sugar, water, and vanilla in a bowl. If it’s thin, stir in powdered sugar one tablespoon at a time. If it’s thick, add more water by one very small drop at a time, whisking constantly.
• Dip each donut or donut hole in glaze and let sit to cool before serving.