Preparation Steps

• Preheat oven to 350°F. Grease a 9x13 inch casserole dish with cooking spray.
• Heat olive oil in large skillet over medium high heat. Add ground beef, onions and green peppers and cook, stirring often, about 7 to 9 minutes, until beef is no longer pink and veggies are softened.
• Add tomatoes, mushrooms, black olives and oregano. Cook, uncovered, for 10 minutes, stirring occasionally.
• Add half of the spaghetti to the bottom of the casserole dish. Top with 1/2 of the tomato/beef mixture. Sprinkle 1 cup of cheddar cheese on top. Repeat these layers a second time.
• In a small bowl, mix together the cream of mushroom soup and water. Pour evenly onto the casserole. Top with Parmesan cheese.
• Bake for 30 minutes. Serve hot.