Baked Spaghetti

Ingredients

• 1 lb. hamburger
• 1/2 cup chopped onion
• 1/2 cup chopped green pepper
• 1 small can sliced mushrooms, drained
• 1/2 can black olives, slice and drain
• 1/2 jar spaghetti sauce
• 2 tsp. dried oregano
• 2 cups shredded cheddar cheese
• 1/4 cup Parmesan cheese
• 1 can cream of mushroom soup
• small box spaghetti