This is an easy recipe for steamed chestnut yokan (sweet bean jelly) that can be made in the microwave without steaming. Simply mix together a few ingredients—smooth bean paste, all-purpose flour, sugar, and water—heat in the microwave, top with candied chestnuts, and let it cool and solidify to create a refined and sweet Japanese confection. Since it doesn't require a traditional steamer, you can easily enjoy an authentic taste. It's perfect for home cafes, entertaining guests, or as a gift, and is recommended even for beginners in making Japanese sweets.