4 ripe, firm tomatoes sliced into ¼- ½ -inch thick rounds
Salt and pepper
1 cup mozzarella cheese, or more if desired
Grease a 9- X 13-inch pan with olive oil and arrange tomato slices in a single layer in pan. Sprinkle each slice with salt and pepper to taste and ½ to 1 teaspoon grated Parmesan cheese. Bake at 350 F for 25 minutes. Remove from oven and top each tomato slice with grated mozzarella cheese. Return to oven just to melt mozzarella.