Name: The Best Chicken Spaghetti Bake
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Yield: 6 servings
Cuisine: American
Ingredients: 2 cups cooked chicken breast, shredded; 12 oz spaghetti, cooked and drained; 1 can (10.5 oz) cream of mushroom soup; 1 can (10 oz) diced tomatoes with green chilies, drained; 1 cup shredded cheddar cheese; ½ cup grated Parmesan cheese; ½ cup chopped green bell pepper; ½ cup chopped onion; ½ teaspoon garlic powder; Salt and black pepper to taste

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Hey y'all! If you're searching for the ultimate comfort food that brings everyone running to the table, look no further than The Best Chicken Spaghetti Bake. This cheesy, creamy casserole offers the perfect blend of tender chicken, savory tomato sauce, and gooey melted cheese. It’s perfect for weeknight family dinners, potlucks, or any time you crave a hearty, crowd-pleasing meal. Ready to make your kitchen smell amazing? Let’s get cooking!

Why You’ll Love This Chicken Spaghetti Bake

Super easy to prepare with simple, pantry-friendly ingredients.
A creamy, cheesy texture that’s comforting and satisfying.

Perfect for feeding a crowd or for making ahead as a freezer meal.
Family-friendly flavors that even picky eaters will love.
Easy to customize with your favorite veggies or cheeses.

Ingredients for The Best Chicken Spaghetti Bake

12 oz dry spaghetti
2 tablespoons olive oil
3 cups cooked chicken, shredded or chopped

1 small onion, finely diced
1 red bell pepper, diced
3 cloves garlic, minced

1 (10.5 oz) can cream of chicken soup
1 (10.5 oz) can cream of mushroom soup
1 (14.5 oz) can diced tomatoes with green chilies (like Rotel), drained

½ cup chicken broth
2 cups shredded cheddar cheese, divided
1 cup shredded mozzarella cheese

1 teaspoon Italian seasoning
½ teaspoon smoked paprika
Salt and pepper, to taste

Fresh parsley, chopped (for garnish)

How to Make The Best Chicken Spaghetti Bake

Step 1: Prep the Spaghetti

Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish with nonstick spray.
Cook the spaghetti according to package directions, but stop 1 minute before it’s fully done (it will finish cooking in the oven). Drain and set aside.

Step 2: Sauté Veggies

In a large skillet, heat olive oil over medium heat. Add onion and bell pepper, sauté about 3-4 minutes until softened.
Add garlic and cook for another 30 seconds until fragrant.

Step 3: Combine the Mix

In a large bowl, combine the sautéed veggies, cooked chicken, cream of chicken soup, cream of mushroom soup, diced tomatoes, chicken broth, half of the cheddar cheese, mozzarella, Italian seasoning, smoked paprika, salt, and pepper. Mix well.

Add the cooked spaghetti and toss until evenly coated.

Step 4: Assemble and Bake

Pour the mixture into the prepared baking dish and spread evenly. Sprinkle remaining cheddar cheese over the top.
Bake uncovered for 30-35 minutes or until bubbly and golden brown.

Let cool for 5-10 minutes before garnishing with fresh parsley and serving.

Notes & Helpful Tips for The Best Chicken Spaghetti Bake

If you want to save time, use rotisserie chicken for a quick protein boost (here’s how to shred it easily).
Don’t overcook the spaghetti or it will get mushy when baked.

For a lighter version, try using low-fat soups and reduced-fat cheese (see more healthy cooking tips).

Variations of The Best Chicken Spaghetti Bake

Southwest Style: Add a drained can of black beans and a cup of corn for a Tex-Mex twist.
Veggie Loaded: Stir in chopped spinach, mushrooms, or zucchini for extra nutrition.

Spicy Kick: Use pepper jack cheese and add diced jalapeños for more heat.

Required Equipment for Chicken Spaghetti Bake

Large pot (for boiling spaghetti)
Large skillet or sauté pan

Mixing bowl
9x13-inch baking dish
Colander

Wooden spoon or spatula

Storage Instructions for The Best Chicken Spaghetti Bake

Refrigerator: Store leftovers in an airtight container for up to 4 days.
Freezer: Cool completely, then cover tightly and freeze for up to 3 months. Thaw overnight in the fridge before reheating.

Reheat: Cover with foil and bake at 350°F (175°C) for 20-25 minutes, or until warmed through.

Serving Recommendations & Pairings

Serve with a crisp green salad and garlic bread for a classic combo.
Pair with steamed broccoli or roasted veggies for added color and nutrition.

Try it with a chilled glass of white wine or iced tea.

Pro Tips for The Best Chicken Spaghetti Bake

Let your casserole rest before slicing to help it set and hold its shape (learn more casserole secrets).
Use a mix of cheddar and mozzarella for a perfect melty, stretchy cheese topping.

Always taste and adjust seasoning before baking for full, balanced flavor.