Aunt Liz's Chicken Spaghetti Casserole

INGREDIENTS

2 cups

chopped cooked chicken breast

2 cups

uncooked spaghetti noodles, broken into 2-inch pieces (about 7 ounces)

1 cup

(1/4-inch-thick) slices celery

1 cup

chopped red bell pepper

1 cup

chopped onion

1 cup

fat-free, less-sodium chicken broth

1/2 tsp

salt

1/4 tsp

freshly ground black pepper

2 10.75 ounce cans

condensed 30% reduced-sodium 98% fat-free cream of mushroom soup, undiluted

Cooking spray

1 cup

shredded cheddar cheese, divided