Preheat the air fryer: Set it to 330°F (165°C).
If your model doesn’t preheat automatically, let it run empty for 3 minutes.
Prep the tray or molds: Use silicone mini muffin molds, silicone cups, or a parchment liner with shallow sides. Lightly spray or brush with oil so the bites release easily.
Mix dry ingredients: In a medium bowl, whisk flour, sugar, baking powder, baking soda, and salt.
Mix wet ingredients: In another bowl, whisk buttermilk, egg, melted butter, and vanilla until smooth.
Combine: Pour wet into dry. Stir gently until just combined.
A few small lumps are fine. Do not overmix.
Add mix-ins (optional): Fold in chocolate chips, berries, or nuts. If using juicy fruit, pat it dry first to avoid soggy spots.
Fill molds: Spoon batter into the prepared cups, filling each about 3/4 full.
This gives them room to puff without spilling over.
Air fry: Cook at 330°F for 6–9 minutes, depending on your air fryer and cup size. They’re done when the tops are set and lightly golden, and a toothpick comes out clean.
Rest and release: Let them sit for 1–2 minutes so they firm up. Gently pop them out with a silicone spatula or your fingers.
Serve: Drizzle with warm maple syrup, or serve with syrup on the side for dipping.
Add fruit or a dusting of powdered sugar if you like.