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Chicken Spaghetti Casserole (Simple & Creamy Comfort Food)

chicken spaghetti casserole baked with cheese and chicken

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This chicken spaghetti casserole is creamy, cheesy, and weeknight-friendly—tender pasta, juicy chicken, and a golden top in under an hour.

Ingredients

Scale

1 pound thin spaghetti (broken in half)

3 cups cooked chicken, shredded or diced

2 cans (10.5 oz each) condensed cream of chicken soup

1/2 green bell pepper, finely diced

1/2 red bell pepper, finely diced

1/2 small onion, finely minced

1 cup chicken broth

1 tablespoon seasoned salt

1 teaspoon black pepper

1/2 teaspoon cayenne pepper (optional)

3 cups sharp cheddar cheese, shredded (divided)

1 tablespoon olive oil (for pasta)

Nonstick spray or butter (for greasing dish)

Instructions

1. Boil spaghetti in well-salted water until al dente; drain and toss with olive oil.

2. In a large bowl, combine pasta, chicken, condensed soup, peppers, onion, broth, seasoned salt, black pepper, cayenne, and 2 cups cheese.

3. Grease a 9×13-inch baking dish; spread the mixture evenly and top with remaining cheese.

4. Cover with foil and bake at 350°F for 40–45 minutes; uncover for the last 10 minutes to brown.

5. Rest 5 minutes before serving.

Notes

Slightly undercook pasta to keep the casserole from getting mushy.

Shred cheese from a block for the smoothest melt.

Refrigerate leftovers up to 4 days or freeze (tightly wrapped) up to 3 months.