1 tablespoon vegetable oil 1 large onion, chopped
1 cup sliced mushrooms Vegetable cooking spray 1 egg, beaten
1/4 cup milk
3 1/2 cups cooked tri-color or plain corkscrew-shaped pasta 1 cup shredded part-skim mozzarella cheese
1 1/2 cups Prego® Traditional Italian Sauce or Prego® Tomato, Basil & Garlic Italian Sauce