This is a recipe for gateau chocolat that can be made with just three ingredients and heated in the microwave. It requires no eggs or butter, no oven or mold, and can be easily made in a single container. Its appeal lies in its moist, smooth, and rich texture, and the fact that even beginners can make it without fail. Sprinkling it with powdered sugar makes it a stylish gift, perfect for Valentine's Day and other occasions.