Wash oysters under cold running water. Generously butter a large casserole dish. Mix the bread crumbs and parmesan; set aside.
Open each oyster and pour off liquid, keeping meat on the half shell. Arrange in casserole so that shells just touch. Lightly sprinkle with pepper and parsley, then with bread crumb-parmesan mix; top with a small piece of butter.
Pour wine into dish, and place dish under the broiler for about 3 minutes, until the crumb mixture has browned.
Remove from oven and let stand for five minutes. Makes 4 servings.