This recipe for "Pumpkin Cake" uses only four ingredients: pumpkin, milk, sugar, and eggs, and is butter- and cream-free. Its key feature is that it can be easily made in the microwave without an oven. The important thing is to carefully remove any fibers or lumps from the pumpkin to achieve a smooth texture. After heating in the microwave, let it cool slightly, then chill in the refrigerator to set, resulting in a rich and flavorful pumpkin cake. Since it can be made simply by mixing and microwaving, it's an easy dessert recommended even for cooking beginners.