Baked Spaghetti Recipe

1 cup chopped green pepper

1 tablespoon butter or margarine

can tomatoes with liquid - 28

can mushroom stems and pieces - 4

can sliced ripe olives - 2-1/4

2 teaspoons dried oregano

1 pound ground beef, browned and drained

12 ounces spaghetti, cooked and drained

2 cups shredded Cheddar cheese

can cream of mushroom soup - 10-3/4

1/4 cup water

1/4 cup grated Parmesan