Melt butter in a large pan.

Add finely chopped onion and chopped celery to the pan.

Sauté the celery and onion in the butter until tender.

Add dried thyme, salt, black pepper, crabmeat, peeled shrimp, and small bay scallops.

Cook until the shrimp and scallops are cooked through, about 10 minutes.

Add the crushed Ritz crackers and mix well.

Add the dry sherry and continue to cook for another 2 minutes.

If stuffing lobsters, stuff six lobsters.

Alternatively, make as a side dish.

Transfer to a casserole dish and cook at 350F for 20 minutes.