I guess anything with Nutella is awesome, so I'm going to make cake in a mug using microwave.
Ingredients:
4 tablespoons Self-raising Flour
4 tablespoons Sugar
3 tablespoons Cocoa Powder
3 tablespoons Nutella
3 tablespoons Milk
3 tablespoons Vegetable Oil
1 Egg
~ Step 1 ~
Mix all ingredients into a huge mug, and whisk well. You may get one from Ikea, but must be microwave safe. The vegetable oil was substituted with olive oil.
~ Step 2 ~
Microwave for 1.5 to 3 minutes depending on your microwave. Mine took about 1.5 minutes.
~ Step 3 ~
Tata! Your cake in a mug is done. Top up with whipped cream if desired.