Cheesy, comforting, and loaded with tender chicken and pasta — this chicken spaghetti casserole is the ultimate family dinner that’s perfect for busy weeknights!

Why You’ll Love This Recipe

• Classic comfort food made simple and hearty.

• Packed with tender chicken, flavorful veggies, and gooey cheese.

• Easy to prepare ahead and bake for weeknight dinners.

• Kid-friendly and perfect for family gatherings.

Ingredients

• 12 oz spaghetti, broken into thirds

• 3 cups cooked chicken, shredded

• 1 tbsp olive oil

• 1 small onion, finely chopped

• 1 green bell pepper, diced

• 2 cloves garlic, minced

• 1 can (10.5 oz) cream of chicken soup

• 1 can (10.5 oz) cream of mushroom soup

• 1 can (10 oz) diced tomatoes with green chilies, drained

• 1 cup chicken broth

• 2 cups shredded cheddar cheese, divided

• 1 cup shredded mozzarella cheese

• 1 tsp salt

• ½ tsp black pepper

• ½ tsp paprika

• ½ tsp garlic powder

Optional Garnishes:

• Fresh parsley, chopped

• Crushed red pepper flakes

Prep Time: 20 minutes
Cook Time: 35 minutes
Total Time: 55 minutes
Servings: 6–8
Calories: ~450 kcal per serving

Step-by-Step Instructions

Step 1: Cook Spaghetti

Cook spaghetti in salted water until al dente, about 8 minutes. Drain and set aside.

Step 2: Sauté Vegetables

Heat olive oil in a skillet. Sauté onion and bell pepper for 4–5 minutes, then add garlic and cook 30 seconds. Remove from heat.

Step 3: Combine Ingredients

In a large bowl, combine cream of chicken soup, cream of mushroom soup, diced tomatoes, chicken broth, salt, pepper, paprika, and garlic powder. Stir in shredded chicken, sautéed vegetables, 1½ cups cheddar, mozzarella, and cooked spaghetti. Mix well.

Step 4: Assemble Casserole

Preheat oven to 350°F (175°C). Grease a 9×13-inch baking dish and spread spaghetti mixture evenly. Top with remaining ½ cup cheddar. Cover with foil.

Step 5: Bake

Bake 25 minutes covered, then remove foil and bake another 10–15 minutes until cheese is golden and bubbly.

Step 6: Rest and Garnish

Let rest 5 minutes before serving. Garnish with parsley and crushed red pepper flakes if desired.

Tips & Variations

• Swap in rotini or penne pasta for a different texture.

• Add frozen peas or corn for extra veggies.

• Use leftover rotisserie chicken to save time.

Frequently Asked Questions

Can I make this ahead of time?

Yes! Assemble in the baking dish, cover with foil, and refrigerate for up to 24 hours. Bake as directed, adding a few extra minutes if chilled.

Can I freeze this casserole?

Yes! Assemble and freeze before baking. Thaw overnight in the fridge, then bake as directed.

Can I make it spicier?

Add chopped jalapeños or increase the diced tomatoes with green chilies for extra heat.

Final Thoughts

This Chicken Spaghetti Casserole is a comforting, cheesy dinner that’s easy to make and sure to be a family favorite. Loaded with tender chicken, flavorful vegetables, and gooey cheese, it’s weeknight dinner perfection!