Preheat air fryer at 350 or oven to 400.

In a bowl combine flour, skyr, baking soda, baking powder, wild blueberries, lemon juice, and salt. Mix until dough starts to come together, then pour onto the counter and knead for 5 minutes. Adding more flour if dough becomes too sticky.

Section dough into 12 pieces and shape each piece into a round ball.

Place round balls onto a piece of parchment paper and brush with melted butter.

Bake in air fryer or oven for 5 minutes, turn each ball and bake an additional 5-6 minutes. If baking in oven bake for 6 minutes each side.

In a small bowl combine granulated sugar and lemon zest. Mix to combine.

Remove donut holes from oven or air fryer, brush with more melted butter and roll in lemon sugar mixture.

Enjoy immediately.