Crockpot Chicken Spaghetti

Crockpot chicken spaghetti is the weeknight dinner I keep coming back to every time life gets busy and I need something comforting with almost no effort. This recipe slow-cooks chicken in a rich, creamy marinara sauce with cream cheese and melted mozzarella, then gets tossed with spaghetti right before serving. It is genuinely one of the most satisfying slow cooker dinners I have made, and my family asks for it on repeat.

I started making this on Sunday afternoons when I wanted dinner to take care of itself while I caught up on everything else. There is something so satisfying about walking into the kitchen hours later to a pot of bubbling, garlicky marinara with tender chicken already falling apart inside. This slow cooker chicken pasta skips canned soup entirely and builds real flavor from scratch with pantry staples. It feeds six people comfortably and comes together with just 10 minutes of hands-on prep.

What You Need for This Crockpot Chicken Spaghetti

I always prep every ingredient before I start layering the slow cooker, because once everything is in, you are done until dinnertime. Pro tip: pull your cream cheese out of the fridge at least 30 minutes before cooking so it softens fully. Cold cream cheese will leave white lumps in your sauce that never fully melt, even after hours in the slow cooker.

• 1 pound boneless, skinless chicken breasts, cubed (or rotisserie chicken, stirred in at the very end)
• 48 oz marinara sauce (2 standard jars – a low-sodium variety works best to keep salt in check)
• 1 cup low-sodium chicken broth
• 2 cloves garlic, minced
• 1/2 onion, diced
• 1 tablespoon Italian seasoning
• 8 oz cream cheese (1 full brick), softened to room temperature and cubed
• 1 1/2 cups shredded mozzarella cheese (or a blend of mozzarella and Parmesan, Gruyere, cheddar, or fontina)
• 16 oz dry spaghetti noodles (1 box – penne, rigatoni, or any short pasta shape also works)

Equipment needed: 6-quart slow cooker, nonstick cooking spray, large pot for boiling pasta, colander, wooden spoon or spatula.

Step-by-Step Instructions for Crockpot Chicken Spaghetti

I recommend reading through all the steps once before you start. This crockpot chicken spaghetti is forgiving and simple, but a few small details make a noticeable difference in the finished sauce texture and flavor.

Step 1: Spray the inside of a 6-quart slow cooker generously with nonstick cooking spray. This prevents sticking around the edges and makes cleanup much easier afterward.

Step 2: Add the cubed raw chicken breast to the bottom of the slow cooker first. Placing the chicken on the bottom protects it from scorching and ensures it cooks evenly in the sauce. Layer the marinara sauce, chicken broth, minced garlic, diced onion, Italian seasoning, and softened cubed cream cheese on top. Stir gently to combine.

Step 3: Cover and cook on LOW for 4 to 5 hours until the chicken reaches an internal temperature of 165 degrees F and is very tender. For a faster option, cook on HIGH for 2 to 3 hours. The sauce will be deep red and fragrant when it is ready.

Step 4: Once the chicken is fully cooked, turn the heat up to HIGH. Stir in the shredded mozzarella, cover, and cook for 15 more minutes until the cheese is completely melted and blended into the sauce. The sauce should look glossy and creamy at this point.

Step 5: While the cheese melts, bring a large pot of generously salted water to a boil. Cook the spaghetti according to package directions until just al dente – do not overcook it here because the pasta continues to absorb sauce once added to the pot. Before draining, scoop out about 1/2 cup of pasta water and set it aside.

Step 6: Add the drained spaghetti directly to the slow cooker and toss thoroughly so every strand gets coated in the sauce. If the sauce feels too thick, stir in a small splash of the reserved pasta water. The starch loosens the sauce and helps it cling to the noodles.

Step 7: Serve immediately. Top each bowl with fresh chopped parsley or extra grated Parmesan if desired.

Perfect Pairings to Serve with Crockpot Chicken Spaghetti

This slow cooker chicken pasta has deep, rich Italian-inspired flavor that pairs well with crisp, fresh, or crunchy sides. Here are the best sides for crockpot chicken spaghetti that round out the meal without competing with the sauce.

Warm garlic bread: Butter-soaked toasted bread is the natural companion for a saucy pasta dish. It handles the extra sauce at the bottom of the bowl beautifully.

Caesar salad: Crisp romaine, tangy dressing, and salty Parmesan cut through the richness of the cream cheese sauce and balance every bite.

Arugula salad with lemon vinaigrette: The peppery bitterness of arugula and a bright lemon dressing are a surprisingly effective contrast against a heavy, creamy pasta.

Steamed broccoli or roasted zucchini: A simple green vegetable adds color and freshness without much extra effort. Toss broccoli directly into the slow cooker during cooking for a built-in vegetable addition.

Garlic knots: If you want full comfort food mode, soft garlic knots make this dinner feel like a restaurant meal at home.

More Slow Cooker and Pasta Recipes to Try

This crockpot chicken spaghetti is part of a whole lineup of easy, comforting slow cooker and pasta dinners worth bookmarking. For another creamy slow cooker pasta night, the Creamy Cajun Chicken Spaghetti brings bold spice to a similar creamy base, while Crack Chicken Penne delivers that same set-it-and-forget-it ease with a ranch-forward twist.

When you want to branch out, Garlic Butter Chicken Pasta is a quick stovetop option that pairs perfectly with the same garlic bread served alongside this dish. For a heartier baked option, Chicken Parmesan Baked Ziti takes similar Italian-inspired flavors and turns them into a bubbling oven casserole the whole family will love.

How to Store and Reheat Slow Cooker Chicken Pasta

Leftovers of this crockpot chicken spaghetti keep well and reheat with minimal effort. Store in an airtight container in the refrigerator for up to 3 days. When reheating, add a small splash of broth or water to loosen the sauce, then warm on the stovetop over medium heat, stirring regularly. The microwave also works in 90-second intervals with a stir in between each one.

For freezing, store the sauce only without the cooked noodles. Cooked pasta loses its texture after freezing and becomes mushy once thawed. The sauce freezes well in an airtight freezer-safe container for up to 3 months. Thaw it overnight in the refrigerator and cook fresh spaghetti when you are ready to serve.

Pro tip: this sauce tastes noticeably better the next day after the flavors have had overnight to develop together in the refrigerator.

Frequently Asked Questions

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