4-Ingredient Air Fryer Mug Cakes
Two 4-ingredient air fryer mug cakes: banana chocolate and peanut butter. Bake at 325°F (160°C) for 11–13 minutes for banana chocolate or 10–12 minutes for peanut butter. Use unsweetened oat milk and peanut butter with no added sugar; optional toppings are separate.
Dietary note: For a vegan result, choose chocolate labelled vegan and dairy-free. Product ingredients vary.
Equipment
- Small oven-safe ramekin or mug
Ingredients
Air Fryer Banana Chocolate Mug Cake
- 1 ripe banana mashed well
- 3 tablespoons oat flour
- 1 tablespoons unsweetened cocoa powder
- 1/4 teaspoon baking powder
- 1 piece dark chocolate 70%, for the top (optional)
Air Fryer Peanut Butter Mug Cake
- 4 tablespoons All-purpose flour
- ¼ teaspoon baking powder
- 2 tablespoons smooth natural peanut butter (no sugar added)
- 4 tablespoons oat milk
- extra smooth natural peanut butter for topping
Instructions
Air Fryer Banana Chocolate Mug Cake
- Mash the ripe banana until smooth.
- In a bowl, mix the oat flour, cocoa powder and baking powder.
- Add the mashed banana and mix until you get a thick batter.
- Spoon the batter into a small oven-safe ramekin or mug.
- Place the piece of dark chocolate on top.
- Air fry at 325°F (160°C) for 11-13 minutes, or until the top looks set.
- Let it cool for 2-3 minutes before eating, because the inside will be very hot and the texture firms up slightly as it sits.
Air Fryer Peanut Butter Mug Cake
- In a small bowl, mix the flour and baking powder.
- Add the peanut butter and oat milk.
- Mix until you get a thick, smooth batter. It should be like a soft cake batter, not dry dough. If the peanut butter is very thick, add 1 extra tsp oat milk.
- Spoon the batter into a small oven-safe ramekin or mug.
- Air fry at 325°F (160°C) for 10-12 minutes, or until the top is set and the cake has risen.
- Let it cool for 2-3 minutes.
- Top with smooth natural peanut butter before serving.
Video
Notes
The card uses the longer 13-minute bake and 3-minute cooling time for its total. Banana chocolate takes 11–13 minutes; peanut butter takes 10–12 minutes, both at 325°F (160°C).
For no added sugar, use unsweetened oat milk and peanut butter with no added sugar. Omit the optional chocolate or choose a vegan chocolate with no added sugar. Naturally occurring sugars are still present, including those in banana.
The video also offers sweetened peanut butter or Biscoff spread as a sweeter alternative in the batter. Those versions contain added sugar. Check packaged ingredients for vegan and dairy-free suitability.