Slow Cooker Cheesy Chicken Spaghetti

This Slow Cooker Cheesy Chicken Spaghetti is the kind of easy dinner that practically makes itself. Tender chicken cooks low and slow in a creamy, cheesy sauce, then gets tossed with spaghetti for a rich, comforting meal the whole family will love. It’s perfect for busy days when you want something warm and filling without having to stand over the stove. The combination of melty cheese, seasoned chicken, and pasta makes every bite creamy and satisfying. If you love simple pasta dinners, be sure to try my One Pot Spaghetti for another easy, no-fuss option.

Ingredients & Substitutions

• Chicken: I used boneless, skinless chicken breasts for a lean and tender result. Chicken thighs work just as well, if preferred. Season the chicken with kosher salt, black pepper, garlic powder, onion powder, and paprika.
• Diced Tomatoes with Green Chilies: Adds a little kick and extra flavor to the sauce. You can use a mild version or swap with plain diced tomatoes if you prefer less heat.
• Cream of Chicken Soup: Helps create a creamy, smooth base. You can substitute with cream of mushroom or cream of celery if that’s what you have on hand.
• Chicken Broth: Thins the sauce slightly and adds depth. You can use low-sodium or swap with water in a pinch.
• Velveeta: Melts smoothly and makes the sauce extra creamy. Did you know you can make homemade copycat Velveeta? Give it a try! You can use another melting cheese if needed, but the texture may be a bit different.
• Cream Cheese: Adds richness and helps thicken the sauce. Let it soften slightly so it melts more easily.
• Sharp Cheddar Cheese: Stirred in at the end for extra cheesy flavor in the sauce, then I add more on top before serving. Mild or medium cheddar can be used if you prefer.
• Spaghetti: Cooked just until al dente so it holds up when mixed into the sauce. You can swap with another pasta shape like linguine or penne.

FAQs

Can I use a different pasta?

Yes! While spaghetti works great, you can use other pasta shapes like penne, rotini, or linguine. Shorter pasta can be a little easier to mix and serve. Or, make homemade shaped pasta to use!

Can I make this with pre-cooked leftover chicken or Rotisserie chicken?

You can. Add about 3 to 4 cups of cooked, shredded chicken or rotisserie chicken and reduce the slow cooker time to just 1 to 2 hours on LOW, or until everything is heated through and the cheese is fully melted.

Can I make Cheesy Chicken Spaghetti without Velveeta?

Yes. You can substitute Velveeta with additional shredded cheese, such as cheddar, Colby Jack, or Monterey Jack. For the smoothest texture, use a combination of shredded cheeses and make sure to stir them in slowly so they melt well. Keep in mind that Velveeta creates a very smooth, creamy sauce, so the texture may be slightly less silky without it, but it will still be delicious.

Can I cook the pasta in the slow cooker?

It’s best to cook the pasta separately. Adding dry pasta to the slow cooker can make it absorb too much liquid and turn soft. Cooking it on the stove keeps the texture just right.

How do I keep the sauce from getting too thick?

If the sauce thickens more than you like, stir in a little extra chicken broth, a tablespoon at a time, until it reaches your desired consistency.

Can I make Cheesy Chicken Spaghetti ahead of time?

Yes. You can make the chicken and sauce ahead, then store it in the refrigerator. When ready to serve, reheat and toss with freshly cooked pasta for the best texture.

Can I make Cheesy Chicken Spaghetti without a slow cooker?

Yes! You can make this on the stovetop. Add the seasoned chicken, diced tomatoes, cream of chicken soup, and chicken broth to a large pot or Dutch oven. Cover and simmer over medium-low heat for about 20 to 25 minutes, or until the chicken is fully cooked to an internal temperature of 165°F. Shred the chicken, return it to the pot, and stir in the Velveeta and cream cheese until melted and smooth. Stir in the cheddar cheese, then add the cooked spaghetti and toss to coat.

Serving Ideas

• Serve this cheesy chicken spaghetti with a side of garlic breadsticks, focaccia breadsticks (my favorite!), or warm, easy dinner rolls to soak up every bit of the creamy sauce.
• Add a simple side salad with a light vinaigrette for a fresh contrast to the rich, cheesy pasta.
• Spoon it into bowls and top with extra cheddar cheese, parsley, or green onions for a little extra flavor and color right before serving.

How to Store Slow Cooker Cheesy Chicken Spaghetti

Refrigerator: Store leftovers in an airtight container in the refrigerator for up to 3 to 4 days.

Freezer: For best results, freeze the chicken and sauce without the pasta. Store in a freezer-safe container for up to 2 months. Thaw overnight in the refrigerator, reheat, and toss with freshly cooked pasta.

Reheating: Reheat on the stovetop over low heat or in the microwave. Add a splash of chicken broth or milk to loosen the sauce as it warms.