Soft and moist Chocolate Eggless Mug Cake with a creamy Nutella filling, ready in just one minute in the Microwave! This is the perfect cozy treat that everyone will love.If you don't have a microwave, you can also bake it in classic oven or an air fryer, you will just need some minutes more. In this case, I suggest to use a ramekin because the most of mugs are not oven-proof.I used a 800W microwave: if you have a Microwave with higher/lower wattage, you have to reduce/increase the cooking time for few seconds; check out the top of the cake that should be dry when the cake is done (you can also check the mug cake with a skewer that would turn out clean).The texture of the chocolate cake is incredibly moist and mud, rich and light since it doesn't feature egg, butter or milk.Nutella is optional, you can simply make a chocolate mug cake and it will be delicious!