**Prepare the Dough (for homemade biscuits):**
- Mix dry ingredients in a bowl. Cut in cold butter until crumbly. Slowly add milk and stir until dough forms.
**Roll and Cut Biscuits:**
- Roll the dough to 1/2-inch thickness. Use a biscuit cutter or glass to cut rounds.
**Preheat the Air Fryer:**
- Set the air fryer to 325-350°F. Preheat for 3-5 minutes.
**Prepare the Air Fryer Basket:**
- Lightly spray with cooking spray or line with parchment paper to prevent sticking.
**Place Biscuits in the Air Fryer:**
- Arrange biscuits in a single layer, leaving space between them for even cooking.
**Air Fry the Biscuits:**
- Cook at 330°F for 6-8 minutes. Brush with melted butter and cook an additional 3-5 minutes for golden perfection.
**Serve and Enjoy:**
- Remove biscuits from the air fryer and serve with your favorite topping like butter, jam, or gravy.