Baked Chicken Spaghetti: This is one of my favorite casseroles! I omit the diced onions and add 1/4 tsp. onion powder, 1/4 tsp. garlic powder, and 1/8 tsp. cayenne pepper. I bake it for only 25 or 30 min. Since you only need to heat it up. I often double the recipe and bake in a 9x13 for 30 or 35 min. Love it!