Slow Cooker Sausage Pasta
Recipe Tested & Approved by Mia Hartwell
Every recipe is developed, cooked, and tested by Mia in a real home kitchen using everyday ingredients to ensure reliable, repeatable results.
Italian sausage simmered into a rich tomato sauce in the slow cooker, then tossed with pasta and cheese. A cozy, hands-off dinner full of deep, savory flavor.
By Mia HartwellUpdated November 21, 2025
Developed using tested cooking methods — cook to the temperatures given and adjust times to your equipment.
Why you'll love this recipe
- A rich, slow-simmered sausage tomato sauce
- Cozy, cheesy pasta with hands-off prep
- Feeds six on a budget
- Easy to make spicy or mild
Slow Cooker Sausage Pasta
5 hr 15 min totalServes 6
Nutrition (per serving)
Values are estimates. See our disclaimer for details.
- Calories
- 600kcal
- Protein
- 28g
- Carbs
- 58g
- Fat
- 28g
- Fiber
- 5g
- Sugar
- 9g
Step-by-Step Instructions
- 1
Brown the sausage in a skillet over medium-high, breaking it up, until cooked through, about 7-8 minutes; drain.
- 2
Add the sausage, onion, garlic, marinara, crushed tomatoes, Italian seasoning, and red pepper flakes to the slow cooker.
- 3
Cover and cook on LOW for 5 hours or HIGH for 2.5-3 hours so the flavors meld.
- 4
Cook the penne separately until al dente and drain.
- 5
Stir the pasta and mozzarella into the sauce and cook 10 minutes on HIGH until the cheese melts.
- 6
Top with Parmesan and fresh basil and serve.
Pro Tips for the Best Results
- Browning the sausage first removes excess fat and builds deeper flavor.
- Cook the pasta separately so it stays al dente rather than turning mushy.
- A long simmer makes the sauce taste slow-cooked and rich — give it the full time if you can.
- Use hot Italian sausage for a spicier sauce or sweet for milder.
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How to Cook Slow Cooker Sausage Pasta
New to this dish? Follow along with the detailed guide below — we break down each stage so you get perfect results the very first time.
Brown the sausage
Crumble and brown the sausage first to render excess fat and develop savory, slightly crispy bits. This browning gives the slow-cooked sauce its deep, meaty backbone.
Simmer the sauce low and slow
Combine the sausage with aromatics and tomatoes and let the slow cooker meld the flavors for hours. This long, gentle simmer is what makes the sauce taste rich and developed rather than like a quick jarred sauce.
Add pasta at the end
Cook the penne separately to al dente so it keeps its texture, then stir it into the sauce with mozzarella to melt. Pasta cooked directly in the slow cooker turns gummy, so this final toss keeps it just right.
Storage & Make-Ahead
Refrigerate leftovers in an airtight container for up to 4 days; reheat with a splash of broth. The sauce alone freezes well for up to 3 months.
Serving Suggestions
This slow cooker sausage pasta pairs beautifully with a crisp green salad, crusty bread, or your favorite grain. Add a simple side of roasted vegetables for a complete, satisfying dinner the whole family will enjoy.
Frequently Asked Questions
Can I cook the pasta in the sauce?+
It's best cooked separately and stirred in at the end; pasta added directly to the slow cooker tends to overcook.
Can I use links?+
Yes — remove the casings and crumble them like ground sausage, or slice fully cooked sausage into rounds.
How do I add vegetables?+
Bell peppers, mushrooms, or spinach all work; add peppers and mushrooms early and spinach at the end.
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