[{"_id":"640a5f1fa99f441f56e0996c","schema":0,"userId":"640a46b8b9447ba3c4832c3d","name":"banana smoothie","ingredients":[{"name":"banana","qty":2,"unit":"unit"},{"name":"milk","qty":1,"unit":"cup"}]}]

db.collection.find({$expr:{$and:[{"$setIsSubset":["$ingredients.name",["banana","milk","apple"]]},{$eq:[{$size:"$ingredients"},2]}]}})