Slow Cooker Chicken Spaghetti

Creamy slow cooker chicken spaghetti with tender chicken, cheesy sauce, and pasta cooked in one pot for an easy comfort food dinner.

When I first heard about Slow Cooker Chicken Spaghetti, I found it pretty bizarre because I knew all about baked spaghetti casseroles but had never thought about making spaghetti in a slow cooker. It seemed like one of those recipes that shouldn't work but somehow does, and I was skeptical about whether the pasta would turn out right or just become a mushy mess.

Turns out this style of cooking became really popular in the South and Midwest back in the 70s and 80s when slow cookers started showing up in every kitchen. People discovered they could throw pasta, chicken, and cheese together in one pot and end up with something that tasted like comfort food without having to watch it on the stove. After I tried it once, I understood why it stuck around because the pasta actually absorbs all those flavors as it cooks instead of just sitting in the sauce.

The chicken gets tender and shreds easily after hours in the slow cooker, then the broken spaghetti cooks right in all those juices. The sauce is made with diced tomatoes and green chilies with just the right amount of tang and heat. My kids love this because it tastes familiar but feels different from regular spaghetti night.

When my sleepy three-year-old requests this before she drifts off to sleep, I prep the ingredients in the morning, toss them in the slow cooker, and just add the pasta less than an hour before everything's done. It's a comfort meal that doesn't require that much energy, multiple pots, or complicated steps.

Ingredients

Boneless, skinless chicken breasts make this recipe so simple because they shred perfectly after slow cooking and soak up all the flavors from the sauce. They stay tender and juicy even after hours in the slow cooker, which is exactly what you want for this kind of comfort food.

Chicken broth keeps everything moist while it cooks, and diced tomatoes with green chilies add this tangy brightness with just enough heat to make things interesting. Onion, garlic, and Italian seasoning build the flavor base that makes the whole dish taste rich and savory.

Broken spaghetti cooks right in the slow cooker with all the chicken and sauce, so it absorbs all those flavors instead of just sitting on top. Cream cheese stirred in at the end makes everything silky and rich, while shredded cheddar adds that sharp, gooey finish that turns this into the ultimate comfort meal. 

See the recipe card for exact quantities.

Step-by-step Instructions

This slow cooker chicken spaghetti is the kind of dish that makes weeknight dinners easy. Everything cooks together in one pot, and the slow simmer gives the chicken plenty of time to turn tender and flavorful.

Load the Slow Cooker

Place the chicken breasts in the bottom of your slow cooker. Pour in the chicken broth and add the diced tomatoes with green chilies, diced onion (or onion powder), minced garlic (or garlic powder), Italian seasoning, salt, and black pepper. Give everything a gentle stir to combine the flavors and coat the chicken.

Cook Until Tender

Cover the slow cooker with the lid. Cook on Low for 6 to 7 hours or High for 3 to 4 hours, until the chicken is fully cooked and tender enough to shred easily with a fork.

Shred the Chicken

Once the chicken is done, carefully remove it from the slow cooker and place it on a cutting board or plate. Use two forks to shred it into bite-sized pieces. Return the shredded chicken to the slow cooker and stir it into the sauce so that it soaks up the flavor.

Add the Pasta

Break the spaghetti in half and stir it into the mixture in the slow cooker. Cover again and cook on High for 20 to 30 minutes, stirring once halfway through to prevent the pasta from sticking together. Cook until the pasta is tender but not mushy.

Make It Creamy

Add the cream cheese cubes and shredded cheddar cheese to the slow cooker. Stir well until both cheeses melt completely and the sauce becomes creamy and smooth. This step pulls everything together into a rich, cheesy spaghetti dish.

Serve

Scoop the chicken spaghetti into bowls or onto plates. Serve warm, with extra shredded cheddar or fresh herbs sprinkled on top if you like.

Storage

Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. When reheating, add a splash of chicken broth or water to loosen up the sauce and keep the pasta from drying out. Warm gently on the stove or in the microwave until heated through.

Recipe