Baked Parmesan Tomatoes

4 tomatoes, halved horizontally
1/4 cup grated Parmesan cheese
1 teaspoon chopped fresh oregano
1/4 teaspoon salt
Freshly ground pepper to taste
2 teaspoons extra-virgin olive oil

Preheat oven to 450 degrees
Place tomatoes cut-side up on a baking sheet.  Top with Parmesan, oregano, salt and pepper.  Srizzle with oil and bake until the tomatoes are tender, about 15 minutes.