Cheesy Chicken Spaghetti Recipe

Comfort food done right: a saucy, cheesy, weeknight-friendly pasta that comes together quickly and feeds a crowd. This Cheesy Chicken Spaghetti Recipe pairs tender chicken cutlets, bright peppers, mild green chiles, and a creamy Alfredo base to create a cozy, satisfying dinner. It’s perfect for busy evenings, leftovers for lunch, or handing around at a potluck. Read on for tips to make it extra creamy, ways to adjust the spice level, and simple swaps if you want to lighten it up.

Why you’ll love this Cheesy Chicken Spaghetti Recipe

This one-pan-style skillet pasta is rich without being fussy. The Trader Joe’s Alfredo sauce provides a smooth, buttery backbone while sharp cheddar adds tang and texture. Diced yellow onion and colorful bell peppers give sweet, savory bites, and a small can of mild diced green chiles brings a gentle warmth and depth. Cumin and chili powder add a subtle southwestern note that plays beautifully with the garlic powder and broth. It’s approachable, quick, and irresistible.

Ingredients

• 1 lb spaghetti
• 2 tablespoons olive oil
• salt & pepper to taste
• 1 lb chicken cutlets*
• 1 cup yellow onion, diced
• 1/2 red bell pepper, diced
• 1/2 green bell pepper, diced
• 4 oz mild diced green chiles, one small can
• 16.9 oz alfredo sauce (Trader Joe’s brand preferred) (1 jar)
• 1 teaspoon cumin
• 1/2 teaspoon chili powder
• 1/2 teaspoon garlic powder or granulated garlic
• 1 cup chicken broth
• 8 oz sharp cheddar cheese, grated
• a few splashes chicken broth or milk, as needed
• cilantro, chopped, optional

*Use chicken cutlets sourced and prepared according to your dietary preferences.

Equipment

• Large pot for boiling pasta
• Large skillet or sauté pan (12-inch recommended)
• Colander
• Wooden spoon or spatula
• Cheese grater

Prep and timing

• Active time: about 25–30 minutes
• Total time: about 30–35 minutes
• Makes: 4–6 servings
• Prep: dice onion and peppers, grate cheddar, open cans and jar

Step-by-step instructions

Follow these rewritten, clear steps to make the Cheesy Chicken Spaghetti Recipe. The directions preserve the original sequence and ingredient amounts but are organized for ease and clarity.

1. Bring pasta water to a boil. Fill a large pot with water, add a generous pinch of salt, and bring it to a rolling boil. Add 1 lb spaghetti and cook according to package directions until al dente. Reserve about 1/2 cup of the pasta cooking water, then drain the spaghetti in a colander and set it aside.
2. Cook the chicken cutlets. While the pasta cooks, heat 2 tablespoons olive oil in a large skillet over medium-high heat. Season the 1 lb chicken cutlets with salt and pepper on both sides. Add the cutlets to the hot oil and cook until golden brown and cooked through, about 3–4 minutes per side depending on thickness. Transfer the cooked cutlets to a cutting board and let them rest for a few minutes, then slice or chop into bite-sized pieces.
3. Sauté the aromatics and peppers. In the same skillet, add the diced 1 cup yellow onion and the diced 1/2 red bell pepper and 1/2 green bell pepper. Sauté over medium heat until the onion is translucent and the peppers are softened, about 4–6 minutes. Use a little more olive oil if the pan looks dry.
4. Add the green chiles and spices. Stir in the 4 oz mild diced green chiles (including the liquid if you like extra flavor), 1 teaspoon cumin, 1/2 teaspoon chili powder, and 1/2 teaspoon garlic powder. Cook for about 30–60 seconds, stirring, so the spices become fragrant.
5. Build the sauce. Pour in the 16.9 oz jar of Alfredo sauce and 1 cup chicken broth, stirring to combine everything into a smooth sauce. If the sauce seems very thick, add a few splashes of reserved chicken broth or milk, a little at a time, until you reach a saucy consistency you like. Bring the sauce to a gentle simmer and let it cook for 2–3 minutes to meld the flavors.
6. Return the chicken and add pasta. Add the sliced or chopped chicken back into the skillet and stir to coat it in the sauce. Then add the drained spaghetti to the pan, gently tossing or folding the pasta into the sauce until evenly coated. If the sauce is too thick, loosen it with more of the reserved pasta water or a splash of chicken broth.
7. Finish with cheddar. Sprinkle 8 oz grated sharp cheddar cheese over the pasta and gently stir until the cheese melts into the sauce, creating a rich, creamy texture. Taste and adjust salt and pepper as needed.
8. Garnish and serve. Remove from heat, sprinkle chopped cilantro on top if using, and serve immediately while hot. This Cheesy Chicken Spaghetti Recipe is at its best fresh, but it also reheats well for lunches and leftovers.

Tips for success

• Do not overcook the spaghetti. Aim for al dente so it holds up when tossed with the sauce.
• Reserve pasta water — the starch helps the sauce cling to the noodles and adjusts consistency without watering down flavor.
• If your Alfredo sauce is thick, thin it with chicken broth or milk a little at a time to reach the right creaminess.
• Grate cheddar fresh from a block for better melt and flavor than pre-shredded cheese, which often contains anti-caking agents.
• Adjust the mild diced green chiles amount to taste. They add subtle warmth and a hint of tang; add more if you want a touch more zing.
• Leftovers: store in an airtight container in the refrigerator for up to 3 days. Reheat gently on the stovetop with a splash of broth or in the microwave in short bursts, stirring in between.

Flavor variations

• Spicier: Add 1/4 teaspoon cayenne pepper or a few dashes of hot sauce when you add the spices.
• Smoky: Use smoked paprika instead of chili powder for a subtle barbecue note.
• Lighter: Use a lighter Alfredo or a mix of half Alfredo and half low-fat milk for a lower-calorie option; keep the same quantities of other ingredients.
• Vegetarian: Replace the chicken cutlets with 1 lb extra-firm tofu, cubed and pan-seared, or 2 cups of roasted cauliflower florets; keep all other ingredients the same.

Make-ahead and freezing

You can assemble this Cheesy Chicken Spaghetti Recipe and refrigerate it in a covered dish for up to 24 hours before reheating. For freezing, cool completely, transfer to a freezer-safe container, and freeze up to 2 months. Thaw overnight in the refrigerator before reheating; add a splash of chicken broth when reheating to revive the sauce.

Serving suggestions

Serve this rich pasta with a crisp green salad and a simple vinaigrette to cut through the creaminess. Warm crusty bread or garlic bread is an obvious but beloved choice. For a lighter side, steamed green beans or roasted Brussels sprouts add color and texture to the plate.

Notes on ingredients

This Cheesy Chicken Spaghetti Recipe calls for Trader Joe’s Alfredo sauce because it’s rich and convenient, but you can use any jarred Alfredo sauce you prefer. The sharp cheddar gives a bright tang that balances the Alfredo’s creaminess; if you prefer a milder flavor, substitute with Monterey Jack or mozzarella, but keep the 8 oz amount the same.

Final thoughts

This Cheesy Chicken Spaghetti Recipe is an easy, comforting dinner that checks all the boxes: creamy sauce, tender chicken, gooey cheese, and bright vegetables. It’s forgiving, adaptable, and reliably delicious—perfect for weekday dinners or feeding a hungry group. Keep this one in your rotation for nights when you want something warm, cheesy, and utterly satisfying.

Enjoy making and sharing this Cheesy Chicken Spaghetti Recipe. Let the flavors do the talking and don’t be afraid to tweak small details to match what your family loves.