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Some nights you need dinner to happen while you are busy doing literally anything else. This slow cooker cheesy chicken penne is that kind of meal. You drop a few ingredients into the pot in the morning and come back to tender shredded chicken simmering in a rich tomato-cream sauce.
The pasta cooks right in the slow cooker during the last half hour, so you don't even need to boil a separate pot of water. The result is a cheesy, saucy bake-style pasta that feeds a crowd with almost no active work. My kids call it "lazy lasagna" and I am not correcting them.
What goes into the pot
This is a pantry-friendly lineup. Boneless chicken breasts keep it lean, while cream cheese and shredded mozzarella build the silky sauce. Use a good jarred marinara or your favorite homemade version. The penne goes in raw at the end and drinks up the flavored broth as it cooks.
- Boneless chicken breasts. They shred easily after slow cooking and stay moist in the tomato broth. Chicken thighs work too if you want richer flavor.
- Marinara sauce. A shortcut that adds body, garlic, and herbs without extra chopping. Pick a brand with minimal sugar.
- Chicken broth. Provides the liquid the penne needs to cook through without turning the sauce bland.
- Cream cheese. Melts into the tomato base and gives the sauce a velvety texture without breaking.
- Shredded mozzarella. The melt factor. Stir some in for silkiness and save the rest for a cheesy lid.
- Uncooked penne. Added during the last half hour so it stays al dente instead of mushy.
- Italian seasoning and garlic powder. A quick seasoning base that deepens during the long simmer.
How it all comes together
- Load the slow cooker. Place the chicken in the bottom of a 6-quart slow cooker. Pour in the marinara, broth, Italian seasoning, garlic powder, onion powder, salt, and pepper. No need to stir much. The chicken just needs to be mostly covered.
- Cook low and slow. Cover and cook on LOW for 4 to 5 hours or on HIGH for 2 to 3 hours, until the chicken shreds easily with a fork.
- Shred the chicken. Remove the breasts, shred them with two forks, and return the meat to the pot. The broth will look thin at this stage. That is normal.
- Enrich the sauce. Drop in the cubed cream cheese and stir until it melts completely into the tomato broth. This takes a minute or two of vigorous stirring.
- Add the penne. Stir in the uncooked pasta and push it under the liquid. If the surface looks dry, add 1/2 cup of hot water or extra broth. Cover and cook on HIGH for 30 to 40 minutes, stirring once halfway through, until the penne is tender but still has a little bite.
- Finish with cheese. Sprinkle the shredded mozzarella and grated Parmesan over the surface. Cover for 5 minutes without lifting the lid so the cheese melts into a gooey blanket. Garnish with chopped parsley and serve straight from the pot.
The pasta timing trick
The biggest mistake with slow cooker pasta is adding it too early. Penne only needs 30 to 40 minutes on high to cook through in hot liquid. Any longer and the edges swell and split. Stir once halfway so the pieces on top get submerged. If you prefer your pasta extra firm, boil it on the stove for 6 minutes first, then stir it in for just 10 minutes to absorb the sauce. For a similar stovetop version, try our creamy garlic chicken penne.
Why cream cheese matters
Cream cheese is the secret to a sauce that stays creamy instead of oily. It emulsifies with the tomato broth as it melts, creating a rich base that clings to the penne. Cut it into cubes so it melts faster, and stir vigorously after adding it. If you only have block cream cheese, microwave it for 20 seconds to soften before cubing.
Swaps that still work
No mozzarella on hand? Provolone, Monterey Jack, or an Italian blend melt beautifully. You can replace cream cheese with neufchatel for a lighter tang, or stir in 1/2 cup of heavy cream at the very end instead. For a vegetable boost, fold in a few handfuls of baby spinach when you add the cheese. It wilts in seconds. If you love one-pot cheesy chicken meals, our crockpot cheesy chicken casserole uses a similar dump-and-go method.
Storing and reheating leftovers
Leftovers keep in an airtight container in the refrigerator for up to 3 days. The pasta will continue to absorb sauce as it sits, so the texture thickens. Reheat gently in the microwave with a tablespoon of milk or broth stirred in to loosen it. This dish does not freeze well because the cream cheese sauce can separate and turn grainy when thawed. The USDA offers practical guidance on slow cooker safety and leftover storage at their slow cooker food safety page.
FAQs
- Can I use frozen chicken breasts?
Yes, but add about an hour to the low cook time and make sure the chicken reaches 165°F internally before shredding. The USDA recommends checking poultry temperature with a reliable meat thermometer.
- Do I need to cook the penne first?
No. The dry penne cooks directly in the hot broth and marinara during the last 30 to 40 minutes on high. If you prefer a firmer bite, you can boil it for 5 minutes first and then finish it in the slow cooker for 10 minutes.
- What can I use instead of cream cheese?
Neufchatel cheese works for a lighter tang, or mascarpone for extra richness. You can also skip the cream cheese and stir in 1/2 cup of heavy cream at the end, though the sauce will be thinner.
- Can I add vegetables to this dish?
Absolutely. Stir in baby spinach or peas when you add the mozzarella. For mushrooms or bell peppers, dice them small and add them at the start so they soften during the long cook.
- Why is my sauce watery?
The pasta releases starch as it cooks, which should thicken the liquid. If the sauce still looks thin, let the pot sit covered off the heat for 5 minutes. You can also stir in an extra handful of shredded cheese to absorb excess moisture.
- How do I store and reheat leftovers?
Refrigerate in an airtight container for up to 3 days. The pasta will absorb more sauce as it sits, so reheat with a splash of milk or broth to bring back the creaminess. Freezing is not recommended because the dairy sauce may separate.
- Can I make this on the stovetop instead?
Yes. Simmer shredded rotisserie chicken in marinara and broth in a large pot. Boil the penne separately, then toss everything together with the cheeses off the heat. It saves time but loses the hands-off magic of the slow cooker.
