Rich Maine lobster lovingly mixed with shrimp and bay scallops, starts this dish. It is then baked into a casserole with shell pasta, a creamy mascarpone-cheddar sauce, and a chunky panko-parmesan topping, the result is simply spectacular. Treat the family, treat the neighbors, or just treat yourself. You won't be disappointed. One 2 1/2 lb. casserole, serves 4-6.