1In a microwave-safe mug, combine the all-purpose flour, granulated sugar, baking powder, and a pinch of salt. Mix well.
Add the milk, vegetable oil, and vanilla extract to the dry ingredients. Stir until smooth and well combined.
Fold in the unsweetened chocolate chips.
Microwave the mug on high for about 1 to
5 minutes, or until the cake has risen and is cooked through. Be careful not to overcook.
Allow the mug cake to cool slightly before enjoying. Serve warm.