Preheat oven to 350 degrees F.
Cut the tops and a very thin piece off the bottom of the tomatoes and stand them up close together on a small sheet pan or pie tin. Sprinkle liberally with salt, pepper, and garlic powder. Carefully pile high the Parmesan cheese on top of each tomato. Bake for about 12 minutes, or until cheese starts to turn golden brown. Remove from oven and serve as a vegetable and a garnish.
Hint: Cook the tomato fromage in the oven with your entree for the last 10 to 12 minutes of cooking so that they are done together.