This creamy and cheesy Chicken Spaghetti Casserole is the ultimate comfort food! Loaded with tender chicken, pasta, and a rich, flavorful sauce, it’s perfect for family dinners, potlucks, or make-ahead meals.

Ingredients

  • 12 ounces spaghetti, cooked and drained
  • 3 cups cooked chicken, shredded or diced (rotisserie chicken works great!)
  • 2 cups chicken broth
  • 1 (10.5 oz) can cream of chicken soup
  • 1 (10.5 oz) can cream of mushroom soup
  • 1 (10 oz) can diced tomatoes and green chilies (like Rotel), drained
  • 2 cups shredded cheddar cheese, divided
  • 1 cup sour cream
  • 1 small onion, finely chopped
  • 1 small green bell pepper, diced
  • 1 teaspoon garlic powder
  • 1 teaspoon paprika (optional)
  • Salt and black pepper, to taste
  • 1 tablespoon butter or olive oil

Instructions

Step 1: Preheat Oven

  • Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish with cooking spray or butter.

Step 2: Cook the Vegetables

  1. Heat 1 tablespoon butter or olive oil in a skillet over medium heat.
  2. Add the onion and green bell pepper, and sauté until softened (about 3–4 minutes).

Step 3: Make the Sauce

  1. In a large mixing bowl, combine:
    • Cream of chicken soup
    • Cream of mushroom soup
    • Chicken broth
    • Sour cream
    • Diced tomatoes and green chilies
    • Garlic powder, paprika, salt, and pepper to taste.
  2. Stir until smooth, then add the sautéed onion and bell pepper.

Step 4: Combine the Ingredients

  1. Add the cooked spaghetti and chicken to the sauce. Mix well until everything is evenly coated.
  2. Stir in 1 cup of shredded cheddar cheese.

Step 5: Assemble the Casserole

  1. Transfer the mixture to the prepared baking dish.
  2. Top with the remaining 1 cup of shredded cheddar cheese.

Step 6: Bake

  • Bake uncovered in the preheated oven for 25–30 minutes, or until the cheese is melted and bubbly.

Step 7: Serve

  • Let the casserole cool for a few minutes before serving. Garnish with fresh parsley, if desired, and enjoy warm!

Tips for the Best Chicken Spaghetti Casserole

  • Make-Ahead Option: Assemble the casserole up to the baking step, cover tightly, and refrigerate for up to 24 hours. Bake when ready to serve.
  • Freezer-Friendly: Freeze the unbaked casserole for up to 3 months. Thaw overnight in the fridge before baking.
  • Customize: Add vegetables like mushrooms, broccoli, or spinach for extra nutrition.
  • Spice It Up: Use pepper jack cheese or add a dash of hot sauce for a spicier version.

Serving Suggestions

  • Pair with a simple green salad or roasted vegetables for a balanced meal.
  • Serve with crusty garlic bread or breadsticks to soak up the creamy sauce.

Storage and Reheating

  • Refrigerate: Store leftovers in an airtight container for up to 3 days.
  • Reheat: Warm individual portions in the microwave or reheat the entire casserole in the oven at 350°F until heated through.

This Chicken Spaghetti Casserole is comfort food at its finest—creamy, cheesy, and loaded with flavor. Perfect for feeding a crowd or enjoying as leftovers, it’s sure to become a family favorite! 🧀✨