Prep: 5 minutes; Cook: 7 minutes
1. Preheat broiler.
2. Remove brown gills from the undersides of mushrooms using a spoon; discard gills. Place mushrooms, gill sides down, on a foil-lined baking sheet coated with cooking spray. Broil 4 minutes.
3. While mushrooms broil, heat a nonstick skillet over medium heat. Coat pan with cooking spray. Add garlic and tomato mixture to pan. Sauté 2 minutes; remove from heat. Stir in rice, 3/4 cup cheese, and Worcestershire sauce.
4. Turn mushrooms over; sprinkle evenly with salt and pepper. Divide rice mixture evenly among mushrooms; sprinkle evenly with 1/4 cup cheese. Broil 3 minutes or until cheese melts.