To start, preheat your Air Fryer to 350 degrees F In a bowl combine 1/2 cup sourdough discard 3/4 cup sour cream  2 TBS granulated sugar 1 1/2 tsp baking powder 1/2 tsp baking soda 1/4 tsp salt Mix until a sticky dough ball forms then turn our onto counter

Gently knead the dough on the floured counter until a smooth dough ball forms Roll out the dough into an even rectangle and cut into equal mini rectangles (around 16) Lay parchment paper or a liner down in the basket or your air fryer

Gently roll the squares into balls Place the rolls in the lined air fryer basket Brush the tops of the dough balls with melted butter Air fry for 4 minutes, flip the balls over and air fry an additional 3-4 minutes or until light golden brown

In a bowl mix together 1/2 Cup granulated sugar 2 TBS ground cinnamon Remove the donuts from Air Fryer and brush donuts with melted butter Gently roll around in the cinnamon and sugar mixture Enjoy right away for best flavor