Penne with Mushrooms and Herbs

1 ib uncooked penne pasta
1 pkg mushrooms
3 Tbsp olive oil
1 1/2 cup chopped onion
4 cloves garlic
1 24 oz jar creamy tomato pasta sauce
2 Tbsp fresh thyme
1 tsp salt
1/2 tsp pepper
2 cups freshly grated Parmesan cheese

Cook pasta according to package directions.  Preheat oven to 425 degrees.  Chop mushrooms.  Heat oil in pot over medium high heat, sauté onion and garlic 3-4 minutes.  Stir in pasta, mushrooms, pasta sauce, thyme, salt, pepper and 1 cup cheese.  Cook 2-3 minutes, stirring to combine.  Transfer pasta mixture into a 9X13 inch baking dish coated with cooking spray and sprinkle with remaining 1 cup cheese.  Bake 20-25 minutes until lightly browned.