Easy Chicken Spaghetti

Comfort food with a modern twist: this Easy Chicken Spaghetti is cheesy, saucy, and incredibly simple. Think tender pasta swirled in a creamy, tomato-speckled sauce studded with shredded rotisserie chicken and two kinds of cheese. It’s the kind of meal you’ll make when you want something that feels indulgent but doesn’t demand a full day in the kitchen. The method is straightforward, the ingredients are pantry-friendly, and the results are deeply satisfying.

This recipe serves a hungry family or provides excellent leftovers for lunch the next day. The flavor is balanced — sharp cheddar brings boldness, Parmesan adds a salty finish, and fire-roasted tomatoes lend bright, smoky accents. Garlic and a small hit of red pepper flakes lift the dish, while a delicate cream-based sauce ties everything together. Below you’ll find the ingredient list followed by clear, step-by-step instructions so you can assemble this meal with confidence.

Ingredients

• 1 pound spaghetti
• 2 tablespoons olive oil
• 2 tablespoons butter
• 4–6 garlic cloves, minced
• 1/4 cup all-purpose flour
• 3 cup low sodium chicken broth
• 1/2 cup heavy cream (or evaporated milk mixed with 1 teaspoon cornstarch)
• 1 15 oz. can fire roasted tomatoes with juices
• 1 teaspoon dried parsley
• 1 teaspoon dried basil
• 1 teaspoon chicken bouillon
• 1/2 teaspoon dried oregano
• 1/2 teaspoon onion powder
• 1/2 teaspoon salt
• 1/2 teaspoon black pepper
• 1/2 teaspoon red pepper flakes
• 1 1/2 cups freshly grated sharp cheddar cheese (or more to taste)
• 1/2 cup freshly grated Parmesan cheese
• 2 cups shredded Rotisserie chicken

Note on Ingredients

Everything in this ingredient list is commonly available and straightforward to swap if needed for personal preferences. The heavy cream can be replaced with evaporated milk if you mix it with 1 teaspoon cornstarch to thicken. Use freshly grated cheeses whenever possible for a smoother melt and better flavor. The shredded rotisserie chicken gives instant, tender protein and deep flavor; use a single whole bird’s cooked meat or pre-shredded chicken from the deli if you prefer.

Step-by-Step Instructions

Follow these steps in order for the best results. The directions keep the same sequence as the ingredient listing while clarifying techniques and timing so you end up with perfectly sauced spaghetti and tender chicken throughout.

1. Cook the spaghetti: Bring a large pot of salted water to a rolling boil. Add 1 pound spaghetti and cook according to package directions until al dente. Reserve about 1/2 cup of the pasta cooking water, then drain the spaghetti and set it aside while you make the sauce.
2. Warm the fats and garlic: In a large, deep skillet or wide saucepan over medium heat, add 2 tablespoons olive oil and 2 tablespoons butter. Once the butter has melted and the fat is shimmering, add 4–6 cloves minced garlic. Sauté the garlic, stirring frequently, just until fragrant and lightly golden — about 30–60 seconds. Do not let it burn.
3. Create the roux: Sprinkle in 1/4 cup all-purpose flour and stir constantly for about 1 minute so the raw flour taste cooks out and the mixture becomes slightly golden. This creates the base that will thicken your sauce.
4. Whisk in the broth and cream: Gradually pour in 3 cup low sodium chicken broth while whisking continuously to avoid lumps. After the broth is fully incorporated and the mixture begins to thicken slightly, stir in 1/2 cup heavy cream (or the evaporated milk mixed with 1 teaspoon cornstarch). Continue stirring and bring the mixture to a gentle simmer.
5. Add tomatoes and seasonings: Pour in the contents of 1 15 oz. can fire roasted tomatoes with juices. Then add 1 teaspoon dried parsley, 1 teaspoon dried basil, and 1 teaspoon chicken bouillon. Sprinkle 1/2 teaspoon dried oregano, 1/2 teaspoon onion powder, 1/2 teaspoon salt, 1/2 teaspoon black pepper, and 1/2 teaspoon red pepper flakes. Stir everything together and let the sauce simmer for 3–4 minutes so the flavors meld.
6. Combine cheeses with sauce: Reduce the heat to low. Gradually stir in 1 1/2 cups freshly grated sharp cheddar cheese, adding a handful at a time and stirring until melted and smooth before adding more. Next, stir in 1/2 cup freshly grated Parmesan cheese. Taste and adjust seasoning if desired; add more salt, pepper, or red pepper flakes to suit your preference.
7. Add shredded chicken: Fold 2 cups shredded rotisserie chicken into the sauce, allowing it to warm through for 2–3 minutes. Stir gently so the chicken is evenly distributed and coated with cheesy sauce.
8. Toss with the spaghetti: Add the drained spaghetti to the skillet with the sauce. Toss the pasta gently to coat every strand with sauce. If the sauce feels too thick, add reserved pasta cooking water a few tablespoons at a time until you reach the desired consistency. The final dish should be creamy and cling to the noodles without being soupy.
9. Finish and serve: Once the spaghetti and chicken are fully combined and heated through, remove the skillet from the heat. Serve the Easy Chicken Spaghetti in warmed bowls or on a large platter, finishing with an extra sprinkle of grated Parmesan or cheddar if desired. Enjoy immediately for the best texture.

Tips and Variations

• Make it lighter: Use evaporated milk mixed with 1 teaspoon cornstarch instead of heavy cream to reduce richness while maintaining a creamy texture.
• Extra veggies: Stir in a cup of baby spinach or 1 cup of sautéed bell peppers and onions for an extra vegetable boost. Add these after the garlic and cook until softened before continuing with the roux.
• Spice it up: If you like more heat, increase the red pepper flakes to 1 teaspoon, or add a dash of hot sauce to the finished dish.
• Make it cheesy: Use up to 2 cups sharp cheddar if you prefer a very cheesy outcome. Freshly shredded cheese melts more smoothly than pre-shredded varieties because it lacks anti-caking agents.
• Oven finish (optional): For a bubbly, browned top, transfer the combined spaghetti and sauce to a greased baking dish, sprinkle with additional cheddar and Parmesan, and broil for 2–4 minutes until golden. Watch carefully to prevent burning.

Storage and Reheating

Leftovers keep well in an airtight container in the refrigerator for up to 3 days. To reheat, add a splash of milk or broth and warm gently on the stovetop over low heat, stirring until the sauce loosens and the pasta heats through. In the microwave, cover the container loosely and stir every 45–60 seconds to ensure even heating. If the pasta has absorbed too much sauce, stir in a little reserved pasta water or milk to restore creaminess.

Why This Recipe Works

The sauce for this Easy Chicken Spaghetti uses a simple roux (butter and flour) with broth and cream to create a stable, velvety base. Fire-roasted tomatoes add brightness and subtle smokiness that prevents the dish from becoming one-note. A combination of sharp cheddar and Parmesan gives both melty texture and a savory, tangy finish. Using shredded rotisserie chicken saves time and adds irresistible roasted flavor without extra effort. Altogether, this produces a reliable weeknight main that’s both approachable and impressive.

Serving Suggestions

• Pair with a crisp green salad dressed in a light vinaigrette to cut through the richness.
• Serve with crusty bread or garlic bread for mopping up any leftover sauce.
• Complement with roasted or steamed vegetables like broccoli or green beans for color and balance.

Final Notes

This Easy Chicken Spaghetti is designed to be straightforward and forgiving. It’s perfect when you want comfort with minimal fuss. Keep the flow of steps: cook pasta, build the sauce, add cheese, fold in chicken, and toss together. With simple pantry ingredients and only basic kitchen skills, you’ll have a crowd-pleasing meal on the table in under an hour.

Enjoy this warm, cheesy plate of pasta for family dinner night or for when you want leftovers that taste even better the next day.