These mug cakes are perfect for when you need some chocolate in your life but don't want to make a whole cake. Cayenne adds a little kick for a sweet and spicy dessert you can make in small batches. Try substituting cinnamon if you're sensitive to spice.
Grease two mugs. Then, in a small bowl whisk egg, milk, butter, vanilla and sugar well and set aside.
In a separate bowl combine dry ingredients - flour, espresso powder, baking powder, cayenne and chocolate chips. Stir well with a fork.
Add the dry ingredients to the wet. Mix well and then divide the batter between the two mugs. Microwave one at a time on high for 1 minute and 15 seconds or until the top of the cake looks dry. Remove from the microwave and let cool 1-2 minutes. (Note: The cakes may fall after cooking. This is normal.
Serving Suggestion: Before serving dust with powdered sugar, whipped cream or even ice-cream. Enjoy!