Ingredients
Method
- Mix flour, sugar, cocoa, baking powder, and salt in a microwave-safe mug.
- Stir in milk, oil, and vanilla until smooth. Scrape batter from the sides.
- Stir in chocolate chips if using.
- Microwave on high for 60–90 seconds until set but still moist in the center.
- Let cool 1 minute before eating.