Slow Cooker Chicken Spaghetti

Slow cooker chicken spaghetti is the kind of creamy, cheesy dinner that makes weeknights so much easier. This cozy crockpot chicken spaghetti recipe is packed with tender chicken, Rotel, and a rich, flavorful sauce the whole family will love.

Creamy chicken spaghetti lifted from a slow cooker on a wooden spoon.

The combination of cream cheese and Colby Jack creates a smooth, comforting sauce that coats every bite of pasta. It has a little kick thanks to the Rotel, but you can easily tame the heat by using the mild version or subbing with a can of diced tomatoes.

If your family loves cozy pasta dinners in the crockpot, be sure to add my Crockpot Garlic Parmesan Chicken Pasta, Marry Me Crockpot Chicken, and Slow Cooker Chili Mac to your meal plan too. They’re just as comforting and always a hit at the dinner table.

Why you’ll love this recipe

Creamy, cheesy sauce that coats every bite of noodles.
Perfect slow cooker recipe for busy weeknights.
Makes generous servings.
Easy to customize spice level.

Ingredient Notes

This section includes ingredient notes and substitution options. Get all measurements, ingredients, and instructions in the printable recipe card at the end of this post.

Ingredients for chicken spaghetti labeled including chicken breasts or tenders, spaghetti, Rotel tomatoes, cream of chicken soup, cream cheese, shredded cheddar or colby jack cheese, onion, garlic, garlic powder, onion powder, Italian seasoning, parsley, salt, and pepper.

Chicken breasts or tenders – Boneless, skinless chicken works best. Tenders may cook slightly faster than full breasts.
Spaghetti – Classic choice for this dish, but penne or rotini work well too.
Yellow onion – Adds depth and savory flavor to the sauce. Dice it small so it softens evenly.
Garlic cloves – Fresh garlic gives the best flavor. Mince finely so it blends smoothly into the sauce.
Diced Tomatoes & Green Chilies – We used Original Rotel which gives the disk a kick. Use mild if you prefer less heat or sub with regular diced tomatoes if you want zero spice to it.
Cream of chicken soup – Creates the creamy base. Swap one can for cream of mushroom soup if you enjoy mushrooms.
Colby Jack or cheddar cheese – For the best melt, shred your own cheese from a block. Pre-shredded cheese contains anti-caking agents that can make the sauce less smooth.
Cream cheese – Use room temperature cream cheese so it blends easily.
Italian seasoning, onion powder, and garlic powder – These spices build layers of flavor.
Parsley – Optional garnish that adds color and freshness at the end.

How to Make Chicken Spaghetti in the Crockpot

This section shows you how to make the recipe with step-by-step photos and instructions. For the full printable recipe, see the recipe card below.

Four-image collage labeled showing raw chicken, diced tomatoes, soup, and seasonings in a slow cooker; cream cheese and shredded cheese added; mixture blended; and cooked spaghetti stirred into the creamy chicken mixture.

Step 1: Add the chicken to the slow cooker along with diced onion, minced garlic, RO*TEL, cream of chicken soup, and spices. Cook until the chicken is tender and reaches 165°F.

Step 2: Add the cream cheese and freshly shredded Colby Jack (or cheddar).

Step 3: Using a hand mixer on low speed, mix until the cheese is mixed into the sauce and the chicken is shredded. Place the lid back on to continue cooking while you prepare the pasta.

Step 4: Cook the spaghetti according to the package instructions and drain, reserving some of the pasta water. Stir the spaghetti into the slow cooker.

Step 5: Thin with a splash of reserved pasta water if needed, then top with parsley and serve.

How to Shred Chicken Quickly

The fastest way to shred chicken for crock pot recipes is with a hand mixer. Once the chicken is fully cooked, use a hand mixer on low speed right in the slow cooker and mix for 30–60 seconds. The chicken will break apart quickly and evenly.

If you don’t have a hand mixer, two forks work just as well. Simply pull the chicken apart then stir it back into the sauce until combined.

Plate of creamy chicken spaghetti with crock pot in the background.

What Goes Well with Chicken Spaghetti?

This cheesy pasta pairs perfectly with a crisp Olive Garden salad and garlic bread.

Storage and Reheating

Leftovers: Store in an airtight container in the refrigerator for up to 3 days.

To Reheat: Warm in the microwave or on the stovetop. Add a splash of milk or broth to loosen the sauce if needed.

Freezer: Let it cool completely, then transfer to airtight, freezer-safe containers. Freeze for up to 2 months. Thaw overnight in the refrigerator before reheating. Warm gently on the stovetop or in the microwave, adding a splash of milk or chicken broth to loosen the sauce as it reheats.

Tips for the Best Chicken Spaghetti

Don’t overcook the chicken. Start checking to see if the chicken has cooked through at the 5 hour mark.
Soften cream cheese before adding for easier mixing.
Use a hand mixer for quick shredding.
Reserve 1 cup of pasta water to use to thin the sauce (if desired).
Stir in the spaghetti gently to keep the it from breaking apart.

Overhead view of a slow cooker filled with creamy chicken spaghetti with rotel. Around it are forks, a wooden spoon, garlic cloves, tomatoes, Italian seasoning, cream cheese, salt container, parsley, and a small bowl of greens.

Troubleshooting & FAQ

Can I use precooked chicken?

Yes. You can use leftover or rotisserie chicken. Reduce cook time to 2–3 hours on low, just long enough to heat through and blend the flavors.

How do I thin the sauce if it’s too thick?

Add reserved pasta water a little at a time, about 2 tablespoons per addition, until you reach your desired consistency. You can also use a splash of milk or chicken broth if needed.

How do I thicken the sauce if it’s too thin?

Let the slow cooker sit uncovered for 10–15 minutes to allow excess moisture to cook off. You can also stir in a handful of freshly shredded cheese to help naturally thicken the sauce.

My sauce looks curdled — what happened?

This can happen if your slow cooker runs too hot or if it was cooked on high too long. For best results, cook this slow cooker chicken spaghetti on low and avoid overheating, especially after adding the cream cheese.

It’s too spicy for my family.

Next time, use mild Rotel or swap for a can of diced tomatoes instead. Stirring in a little extra cream cheese can also help mellow the heat.

More Pasta Recipes

If your family loves pasta as much as mine, you should also try:

Sloppy Joe Pasta
Crockpot Velveeta Mac and Cheese
Penne alla Vodka – My mom’s famous recipe!
Taco Spaghetti