Moomoo Cheese was introduced as an Item card in the Pokémon Trading Card Game during the English Sword & Shield Series (the Japanese Sword & Shield Era). It was first released in the Japanese Legendary Heartbeat subset and the English Vivid Voltage expansion, with artwork by 5ban Graphics. It allows the player to heal 30 damage from up to two Pokémon that have Energy attached.
Trivia
As its name suggests, it may be made from Moomoo Milk.