4 large portobello mushrooms
4 tsp. plus 1 tap. oil divided
1 1/2 cups finally chopped plum tomatoes
3/4 cup shredded mozzarella cheese
1 tsp. Italian seasoning
4 hamburger rolls.
Preheat broiler or grill. Remove stems and scrape gills out of mushrooms. Brush caps with 4 tsp. oil. Grill or place on baking sheet stem side down and broil 5 minutes.
In a bowl mix tomatoes, cheese, seasonings and remaining oil. Remove mushrooms and fill caps with tomato mixture equally. Broil or grill 4-6 minutes longer or until mushrooms are tender and cheese melts. Place on buns.