If the onion mixture has cooled, mix it to the crab mixture. Stuff the combination into cleaned crab shells or what ever else helps make you joyful. Drizzle the melted butter above the stuffed shells evenly. Year the water generously (and over appears to be realistic) with the old bay. https://angelowdijw.jts-blog.com/30926772/not-known-facts-about-live-crabs-philadelphia