In a skillet, brown hamburger meat, onions, green bell pepper. Add tomato sauce, garlic, powder and oregano and simmer. Add salt and pepper. Cook, drain and wash a small package of spaghetti. In a cake pan or casserole dish, put meat mixture. Layer spaghetti on top. Sprinkle two cheese of your choice on top. Bake at 350 degrees until cheese is melted.
NOTE: You can make as much casserole as you wish. Add as much tomato sauce, garlic powder, oregano, onions, etc. as you like. Add mushrooms to meat if you like, as well as any other ingredients you like. This is an excellent way to make supper for guests ahead of time. All you need to do is heat it until cheese melts, toss a salad and heat garlic bread in a microwave and you can have supper on the table in a very short time.