Ingredients
Method
- Mash banana in a microwave-safe mug until mostly smooth.
- Stir in peanut butter, milk, oil, and vanilla.
- Add flour, sugar, baking powder, and salt. Mix until just combined.
- Microwave on high for 70–90 seconds. Check with a toothpick.
- Let cool 1 minute, then eat straight from the mug or tip onto a plate.