Method

• Step

  MIX the flour, cocoa powder, sugar, baking powder, espresso powder, baking soda, and salt together in a large bowl.

• Step

  WHISK the egg, milk, vanilla, vinegar, and oil in a separate bowl.

• Step

  MIX the wet ingredients into the dry mixture until combined.

• Step

  GREASE the muffin cups with cooking spray and pour batter in until cups are ¾ full.

• Step

  SELECT Preheat on the air fryer, adjust to 300°F, then press Start/Pause.

• Step

  PLACE the muffin cups carefully into the preheated air fryer. You may need to work in batches.

• Step

  SELECT Desserts, adjust time to 15 minutes, then press Start/Pause.