Steps
1. Preheat your oven to 350°F (175°C) and grease a small ramekin or oven-safe mug.
2. In a mixing bowl, combine the flour, sugar, cocoa powder, baking powder, and salt.
3. Add the vegetable oil, milk, and vanilla extract to the dry ingredients and mix until smooth.
4. Stir in the chocolate chips if using.
5. Pour the batter into the prepared ramekin.
6. Bake for 15-18 minutes or until a toothpick comes out clean.
7. Let it cool for a few minutes before enjoying your chocolate cake.