Fill a large pot with salted water. Bring to a boil and immediately add the lobsters. Cook for 7 minutes.
Remove the lobsters, split them, brush them with melted butter and place under a broiler for another 7-8 minutes, or just until the meat is cooked and the top is nicely browned.
If desired, a minute before removing from broiler, you may sprinkle the green tomalley with buttered bread crumbs.