Pre-heat Air Fryer at 300F (149C). Set at 10 minutes. Before pre-heating, slowly insert Air Fryer tray into the middle cooking chamber, near the rotisserie catch.
Soak peeled, cored, and sliced apples in water to avoid browning.
Add ground nutmeg to cinnamon powder. Mix well.
Add vanilla extract onto maple syrup. Mix well.
Pat dry apples with kitchen towel. Arrange apple slices in a single layer using a baking pan. An 8x8 baking pan fits well in this particular Air Fryer Oven.
Drizzle olive oil. Slightly toss. Add softened butter and coat apple slices using a silicone spatula.
Sprinkle cinnamon-nutmeg mixture. Reserve ⅛ teaspoon of the mixture. Slightly toss.
Drizzle maple syrup-vanilla extract mixture all over coated apple slices. Gently toss to coat each slice. Arrange apple slices in a single layer. Sprinkle the remaining cinnamon-nutmeg mixture on top of apple slices.
Gently place baking pan onto the Air Fryer tray. No need to wait for the “turn food” reminder provided by the Air Fryer. You may do so after 5 minutes, if desired.
Watch closely during the remaining time and avoid overcooking.
Once apples are soft and tender, stop the Air Fryer by pressing “cancel” if you still have time. This recipe used the entire 10 minutes during the initial set time.
Remove baking pan. Transfer Air Fryer Apples to serving plates and enjoy.