Cut the tomatoes in half horizontally and place in a shallow flameproof
dish.
Beat the butter with the oregano, garlic, pepper, salt and Parmesan
in a bowl. Spread the mixture over the cut side of each tomato.
Broil the tomatoes under medium heat for about 5 minutes until
the topping is just turning golden. Recipe for Broiled Tomatoes serves 4
From "The Complete Book of Herbs"