Ingredients

• 1 cup chopped onion
• 1 cup chopped green onion
• 1 tablespoon butter
• 1 tablespoon margarine
• 1 can tomatoes (with juice) cut up
• 1 can mushroom pieces and stem drained
• 1 can sliced ripe olives drained
• 2 teaspoons oregano
• 1 lb ground beef browned and drained (optional)
• 12 oz spaghetti cooked and drained
• 2 cups shredded Cheddar cheese
• 1 can condensed cream of mushroom soup undiluted
• 1/4 cup water
• 1/4 cup grated Parmesan cheese