Pizza Sauce:
To make pizza sauce, use oil to sauté onion, celery and garlic in a medium saucepan. When onion is golden, stir in tomato sauce, tomato paste, Parmesan cheese, oregano, basil, salt, sugar, Worcestershire sauce and pepper. Simmer until thickened, about 15 minutes.
Cook noodles according to package directions.
Spray a 15 x 10-inch pan with nonstick cooking spray. Arrange 5 noodles in the pan and sprinkle with 1 cup mozzarella cheese. Add a second layer of 5 noodles and another cup cheese. Use remaining noodles for a third layer, but don't sprinkle cheese. Instead, spread pizza sauce evenly over noodles and bake at 350°F for 10 minutes.
Remove pan from oven and add pepperoni, mushrooms, olives and green peppers to pizza. Top with remaining cheese. Bake another 15 minutes or until cheese melts.
Makes 10 servings per pizza.