Roasted Bella Pomodoro

1 pkg portabella mushrooms
1 onion, quartered
1 bulb garlic
8 small tomatoes
½ cup fresh basil, chopped
parmesan cheese
salt and pepper to taste

Combine first 4 ingredients in pan, drizzle with olive oil and roast for 30 minutes at 425.
Pulse in food processor to chop roughtly. Combine with pasta and add salt and pepper to taste.