Cheesy Chicken Spaghetti With Homemade Cheese Sauce

Posted on October 27, 2025

Close-up of a golden casserole of Chicken Spaghetti topped with herbs, showing chunks of Tender Chicken Breast, twirled Spaghetti Pasta, and a glossy Cheese Pasta sauce.

Cheesy Chicken Spaghetti is the kind of cozy, crowd-pleasing dish that makes weeknights feel like a warm hug — one saucy forkful at a time. If you love gooey comfort food with a little kick from Rotel tomatoes and the unshakable comfort of pasta, this recipe is speaking your language.

Cheesy Chicken Spaghetti — Homemade Cheese Sauce

This version of Chicken Spaghetti builds its personality around a silky Homemade Cheese Sauce that clings to every strand of Spaghetti Pasta. You get tender, well-seasoned Chicken Slices, pockets of tangy Rotel, and a bubbling, golden top thanks to extra Melty Cheese — think dinner-table applause in casserole form.

Why this recipe hits the spot

What makes this dish irresistible? A few reasons:

  • It’s pure comfort: warm, cheesy, and filling.
  • The Tender Chicken Breast keeps the dish protein-forward so people leave the table satisfied.
  • It stores and reheats well — hello lunch the next day.
  • It’s flexible: swap cheeses, add veggies, or amp the spice for your crowd.

Pro tip: if you want every bite to taste like it came from a diner, use a mix of sharp cheddar and a mild melting cheese (like Monterey jack) for depth plus stretch.

Ingredients — and why each one matters

Here’s a concise ingredient list with short notes so you know what each component brings to the party:

  • Chicken breasts (2 large) — cook, rest, and slice into even Chicken Slices; juicy protein base.
  • Salt, pepper, and Italian seasoning — simple, effective seasoning for the chicken.
  • 8 oz spaghetti (thin Spaghetti Pasta) — strands that soak up sauce without getting gummy.
  • 2 tbsp butter + 1 tbsp olive oil — for sautéing aromatics and building the sauce base.
  • 1 small onion, finely chopped + 2 cloves garlic, minced — savory backbone.
  • 2 tbsp all-purpose flour — the roux starter to thicken the sauce.
  • 2 cups chicken broth — adds savory depth and thins the sauce as needed.
  • 1 cup milk (or half & half for extra creaminess) — luscious body for the sauce.
  • 8 oz cream cheese, softened — gives that silky, tangy richness.
  • 2 cups shredded cheddar (sharp) — bold flavor; part of your Melty Cheese mix.
  • 1 cup shredded mozzarella — meaty, gooey topping.
  • 1 can (10 oz) Rotel (diced tomatoes & green chiles) — bright, slightly spicy contrast.
  • 1/2 tsp smoked paprika and a pinch of red pepper flakes (optional) — smoky warmth.
  • Fresh parsley or chives, chopped — for garnish and freshness.

How to make it — simple, step-by-step

This recipe reads fancier than it is. Work in stages: chicken, sauce, pasta, assemble, bake.

  1. Prep & cook the chicken. Season the Tender Chicken Breast pieces with salt, pepper, and Italian seasoning. Sear in a hot skillet with a splash of oil until golden and cooked through. Rest 5 minutes, then slice into bite-size Chicken Slices. Set aside.
  2. Boil the pasta. Cook the Spaghetti Pasta to al dente in salted water. Drain and set aside; reserve 1 cup pasta water.
  3. Make the roux & sauce base. In the same pan, melt butter and sauté onions until translucent. Add garlic for thirty seconds. Sprinkle in the flour and stir to make a light roux — cook 1 minute.
  4. Build the sauce. Slowly whisk in chicken broth, then milk. Bring to a gentle simmer; sauce will thicken. Stir in softened cream cheese until smooth.
  5. Cheese time. Reduce heat; add shredded cheddar and stir until melted. Fold in Rotel (drain if you prefer less liquid). Taste and add paprika, red pepper flakes, or salt/pepper. If the sauce feels tight, loosen with some reserved pasta water.
  6. Combine. Toss in cooked spaghetti and Chicken Slices until everything’s evenly coated in the Homemade Cheese Sauce. Stir gently but thoroughly.
  7. Bake (optional but highly recommended). Transfer to a buttered casserole dish, top with mozzarella for that Melty Cheese crown, and bake at 375°F (190°C) for 10–15 minutes until bubbly and golden. Broil 1–2 minutes for extra bronzing.
  8. Garnish & serve. Sprinkle fresh parsley and serve hot.

The story behind the dish

Chicken Spaghetti Recipes are a staple in Southern kitchens and potlucks — humble, hearty, and endlessly adjustable. This casserole evolved from mid-century American comfort food traditions that loved mixing pasta, canned tomatoes, and cheese for an economical feed-the-family winner. Adding cream cheese and Rotel gives that tangy, modern twist people go nuts for today.

Pro tips for perfect results

  • Don’t overcook the pasta. It should finish cooking in the sauce — this keeps the texture perfect after baking.
  • Use room-temperature cream cheese. It melts faster and smoother.
  • Reserve pasta water. That starch-rich liquid helps thin or loosen your sauce without watering it down.
  • Layer cheeses. Sharp cheddar in the sauce, mozzarella on top = flavor + stretch.
  • Season gradually. Cheese adds salt; taste as you go.
  • Let it rest. After baking, give the casserole 5 minutes so it firms up for cleaner slices.

Variations to try (get creative!)

  • Spicy: add a diced jalapeño with the onion, or use a hot Rotel.
  • Green veg boost: stir in spinach, peas, or steamed broccoli for color and nutrients.
  • Smoky bacon: crisp bacon bits folded in or sprinkled on top add a crunchy, savory contrast.
  • Chicken swap: use rotisserie chicken for an ultra-easy shortcut.
  • Healthier option: swap half the cheese for Greek yogurt and use whole-wheat spaghetti.
  • Cheese pasta deluxe: mix in a little Gruyère or fontina for nutty complexity.

Best ways to serve

This casserole pairs beautifully with a crisp side salad (vinegar brightens the richness) or garlic bread for scooping sauce. It’s also perfect alongside roasted green beans or a lemony arugula salad to cut the richness.

Close-up of a golden casserole of Chicken Spaghetti topped with herbs, showing chunks of Tender Chicken Breast, twirled Spaghetti Pasta, and a glossy Cheese Pasta sauce, Cheesy Chicken Spaghetti.Pin

Storage, reheating & make-ahead

  • Fridge: Store in an airtight container for up to 3 days.
  • Freeze: Portion into freezer-safe containers for up to 3 months. Thaw overnight in the fridge before reheating.
  • Reheat: Microwave single portions adding a splash of milk, or reheat the whole dish in a 350°F oven until warmed through, covering to avoid drying out. Tip: A little extra shredded cheese on top before reheating makes it feel fresh.

FAQs

Can I use pre-shredded cheese?

Yes, but freshly shredded melts better and avoids the anti-caking agents that can make the sauce grainy.

Is there a non-dairy option?

Use plant-based cream cheese and dairy-free cheese shreds. Use unsweetened oat milk for creaminess.

Can I make this on the stovetop only (no bake)?

Absolutely. Combine pasta, sauce, and chicken in the pan and serve right away; top with cheese if you want to broil individual servings.

How can I make it lighter?

Use half-and-half instead of heavy milk, reduce cheese by 25%, and bulk with veggies.

My sauce is grainy — what went wrong?

Overheated dairy or adding cheese too quickly can curdle a sauce. Remove from high heat and stir in cheese slowly.

Final thoughts

If you want a dish that’s both nostalgic and proudly modern, this Cheesy Chicken Spaghetti checks every box. It’s flexible enough to suit picky eaters and adventurous cooks alike. Whether you call it Cheese Pasta, a casserole, or Sunday supper magic, it brings people together — which is, after all, what good cooking does best.

So—ready to make midweek magic? Grab your Tender Chicken Breast, your favorite cheeses, and a box of Spaghetti Pasta, and let the oven work its bubbly, glorious charm. Your family (and lunch boxes tomorrow) will thank you.

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Close-up of a golden casserole of Chicken Spaghetti topped with herbs, showing chunks of Tender Chicken Breast, twirled Spaghetti Pasta, and a glossy Cheese Pasta sauce.

Cheesy Chicken Spaghetti With Homemade Cheese Sauce

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  • Author: Jennifer
  • Prep Time: 15 minutes
  • Cook Time: 40 minutes
  • Total Time: 55 minutes
  • Category: Dinner

Description

Creamy, cheesy chicken spaghetti tossed in a rich homemade cheese sauce with a pop of diced tomatoes and green chiles. Perfect for a family dinner or casserole night.


Ingredients

Scale
  • 8 oz thin spaghetti
  • 2 boneless, skinless chicken breasts (small)
  • 2 tbsp olive oil
  • Salt and black pepper, to taste
  • 2 tsp Italian seasoning
  • 4 tbsp (1/4 cup) unsalted butter
  • 3 cloves garlic, minced
  • 1 small yellow onion, finely chopped
  • 4 tbsp all-purpose flour
  • 1½ cups chicken broth
  • ¾ cup milk
  • 4 oz cream cheese, softened
  • 1 cup shredded cheddar cheese
  • 1 cup shredded mozzarella cheese
  • 10 oz can diced tomatoes & green chiles (drained)
  • Red pepper flakes (optional, for serving)
  • Fresh parsley, chopped (for garnish)


Instructions

  1. Prep the chicken
    Pat the chicken breasts dry, then season both sides with salt, pepper and the Italian seasoning. Slice each breast in half horizontally if they’re thick so they cook more evenly.

  2. Sear the chicken
    Heat the olive oil in a large skillet over medium-high heat. Add the chicken and cook until nicely browned and done through, about 5–6 minutes per side depending on thickness. Remove the chicken to a plate to rest, then cut into bite-sized pieces.

  3. Start the sauce base
    Lower the heat to medium. In the same skillet, melt the butter. Add the chopped onion and cook until softened, about 4 minutes. Stir in the minced garlic and cook 30–60 seconds until fragrant.

  4. Thicken the sauce
    Sprinkle the flour over the onions and garlic and stir to coat. Cook, stirring, for about 1–2 minutes to remove the raw flour taste. Slowly whisk in the chicken broth until smooth, then whisk in the milk. Bring the mixture to a gentle simmer so it thickens slightly.

  5. Add the cream cheese and cheddar
    Reduce heat to low and stir the softened cream cheese into the sauce until it melts and the mixture is smooth. Add the shredded cheddar a handful at a time, stirring until fully incorporated and velvety.

  6. Cook the pasta
    While the sauce comes together, boil the spaghetti in a large pot of salted water according to package directions until al dente. Drain and return to the pot.

  7. Combine tomatoes and chicken with the sauce
    Stir the drained diced tomatoes and the chopped cooked chicken into the cheese sauce. If you want a thinner sauce, you can stir in a little of the reserved tomato juice or extra broth.

  8. Toss pasta with sauce
    Pour the sauce over the drained spaghetti and toss gently until all the noodles are coated.

  9. Bake to finish
    If your skillet is ovenproof, leave the mixture in it; otherwise transfer everything to a greased 9×13-inch baking dish. Sprinkle the shredded mozzarella evenly over the top. Bake in a preheated 400°F (200°C) oven for about 15 minutes, until heated through and the cheese is bubbly.

  10. Brown the top (optional)
    For a golden finish, switch the oven to broil and place the casserole under the broiler for 1–2 minutes — watch it closely so it doesn’t burn.

  11. Serve
    Remove from the oven, let rest a couple minutes, then garnish with chopped parsley and a pinch of red pepper flakes if desired. Serve with garlic bread or a crisp salad.


Notes

  • Let the cooked chicken rest before dicing so it stays juicy.
  • If your cream cheese isn’t very soft, cut it into small cubes so it melts faster into the sauce.
  • Use freshly shredded cheese for a smoother melt; pre-shredded cheese can sometimes be clumpier.
  • This dish reheats well—loosen leftovers with a splash of milk or broth when warming.

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