Slow cooker baked ziti is the kind of hearty, hands-off dinner that practically makes itself. You brown the sausage, toss everything into the crockpot, and come back to a bubbling, cheesy pasta dish your whole family will love. I have been making slow cooker baked ziti on busy weeknights for years, and it never fails to bring everyone to the table fast.
There is something so comforting about lifting that lid and seeing melted mozzarella stretching over perfectly sauced pasta. The Italian sausage adds deep, savory flavor that soaks right into every bite. It is simple, satisfying, and made almost entirely with pantry staples. Your family will thank you!
Table of Contents
Ingredients for Slow Cooker Baked Ziti
I always keep these ingredients stocked because this slow cooker baked ziti comes together with almost zero effort. Here is everything you need:
- 1 tbsp olive oil
- 1 lb Italian sausage, crumbled (pork, chicken, or turkey all work) – I recommend pork Italian sausage for the richest, most savory flavor
- 1 small onion, chopped
- 4 cloves garlic, minced – In my experience, fresh garlic makes a real difference here over the jarred kind
- 28 oz can crushed tomatoes
- 15 oz can diced tomatoes (do not drain)
- 1½ tsp Italian seasoning
- 1 tsp dried oregano
- 1 tsp dried basil
- ¾ tsp salt – My preference is to taste and adjust at the end since sausage brands vary in saltiness
- ⅛ tsp black pepper
- 2½ cups water
- 16 oz uncooked ziti or penne pasta – I usually use classic ziti for that authentic baked ziti feel; whole wheat works too
- 1 cup shredded mozzarella cheese (4 oz)
Step-by-Step Instructions
I recommend reading through all the steps before starting so nothing catches you off guard. Here is how to make slow cooker baked ziti perfectly every time:
Step 1: Heat olive oil in a large skillet over medium-high heat. Add the Italian sausage and cook for 3 to 4 minutes, breaking it apart as it browns. Add the chopped onion and keep cooking until the sausage is fully cooked through, about 5 to 6 more minutes. Stir in the minced garlic and cook for 1 more minute. Drain off any excess grease before moving on.
Step 2: Transfer the cooked meat mixture to your slow cooker. Add the crushed tomatoes, diced tomatoes, Italian seasoning, oregano, basil, salt, pepper, and water. Stir everything together until combined. Do not add the pasta yet. The sauce will look watery at this stage and that is completely normal. The extra liquid is essential for cooking the dry pasta later.
Step 3: Cover and cook on HIGH for 3 hours or LOW for 6 hours. Do not lift the lid during this time.
Step 4: Stir in the uncooked ziti, pressing all the pasta down into the sauce so it is fully submerged. Cover and continue cooking on HIGH for 15 to 25 minutes. Stir once after the first 15 minutes to help the pasta cook evenly. Start checking for doneness at the 15-minute mark. If your slow cooker was on LOW, it will take closer to 25 minutes since the cooker needs time to heat back up after adding the cold pasta.
Step 5: Once the pasta is tender, turn off the slow cooker. Scatter the shredded mozzarella evenly over the top. Cover and let the dish rest for 5 minutes until the cheese melts into a gooey layer. Serve hot straight from the crockpot.
Perfect Pairings for Slow Cooker Baked Ziti
This dish is rich and saucy, so the best sides bring a little freshness or crunch to balance it out. Here are my favorite ways to round out the meal:
Easy Garlic Bread with Sliced Bread: A classic pairing that lets you scoop up every last bit of that savory tomato sauce. Crispy on the outside, soft inside, it is hard to beat alongside slow cooker baked ziti.
Homemade Cheesy Breadsticks: If you have a little extra time, warm cheesy breadsticks are perfect for dipping into the extra sauce at the bottom of the bowl and make this feel like a restaurant-style dinner at home.
Easy Vegetable Soup: A light, brothy vegetable soup served alongside adds a fresh contrast and helps balance the richness of the cheesy pasta without filling everyone up before the main event.
Garlic Roasted Vegetables: A quick sheet pan of roasted vegetables adds color, nutrients, and a slightly crispy texture that works beautifully next to the soft, saucy ziti. Broccoli and zucchini are especially good here.
Cold Pasta Salad: A chilled pasta salad with tangy vinaigrette cuts right through the richness of the slow cooker baked ziti and turns the whole spread into a satisfying, crowd-pleasing dinner for gatherings.
Did you enjoy this recipe?
Save it to your Pinterest board and make it again later!
📌 Save this Recipe@dinnerchickenrecipes
Spinach and Ricotta Stuffed Shells: Planning an Italian-themed dinner night? These stuffed shells make a showstopping companion dish and share many of the same pantry ingredients, making prep simple.
Keeping and Serving Your Slow Cooker Baked Ziti
Store leftovers in an airtight container in the refrigerator for up to 4 days. The pasta will absorb more sauce as it sits overnight, so it actually gets more flavorful the next day. Before storing, make sure the dish has cooled to room temperature.
To reheat, I recommend adding a small splash of water to loosen the sauce, then microwaving individual portions in 90-second intervals until hot. You can also reheat a larger batch covered in the oven at 350 degrees F until warmed through, about 15 to 20 minutes.
Pro tip: this slow cooker baked ziti freezes beautifully. Portion cooled leftovers into freezer-safe bags or airtight containers and freeze for up to 3 months. Thaw overnight in the fridge before reheating. It is a great option for meal prep or stocking your freezer for a busy week ahead.
Frequently Asked Questions
Can I use a different type of pasta for this recipe? Yes. Penne is the most popular swap and works exactly the same way as ziti. Avoid long pasta shapes like spaghetti or small shapes like orzo as they cook unevenly in the slow cooker.
Do I have to brown the sausage before adding it to the slow cooker? Yes, do not skip this step. Browning the sausage first ensures the meat is fully cooked through and safe to eat, since slow cookers do not always reach temperatures high enough to cook raw meat reliably from start to finish. It also builds flavor in the pan that carries into the sauce.
Why does my pasta seem gummy after cooking in the slow cooker? This usually happens when the pasta overcooks or when the slow cooker runs very hot. Start checking the pasta at 15 minutes and pull it off heat as soon as it is just tender. Whole wheat pasta can also turn gummy faster than regular pasta, so watch it closely if that is what you are using.
Conclusion
Slow cooker baked ziti is one of those recipes you will come back to again and again. It is cozy, filling, and genuinely easy to pull together on a busy day. Give this one a try tonight and watch it disappear from the table fast. Happy cooking!
Slow Cooker Baked Ziti
Ingredients
Equipment
Method
- Heat olive oil in a large skillet over medium-high heat. Add the Italian sausage and cook for 3 to 4 minutes, breaking it apart as it browns. Add the chopped onion and continue cooking until the sausage is fully cooked through, about 5 to 6 more minutes. Stir in the minced garlic and cook for 1 more minute. Drain off any excess grease.
- Transfer the cooked meat mixture to the slow cooker. Add the crushed tomatoes, diced tomatoes, Italian seasoning, oregano, basil, salt, pepper, and water. Stir to combine. Do not add the pasta yet. The sauce will look watery and that is normal. The extra liquid will be absorbed by the pasta later.
- Cover and cook on HIGH for 3 hours or LOW for 6 hours. Do not lift the lid during this time.
- Stir in the uncooked ziti, pressing all the pasta down into the sauce so it is fully submerged. Cover and continue cooking on HIGH for 15 to 25 minutes. Stir once after the first 15 minutes to help the pasta cook evenly. If your slow cooker was on LOW, expect closer to 25 minutes since the cooker needs time to reheat after adding the cold pasta.
- Once the pasta is tender, turn off the slow cooker. Scatter the shredded mozzarella evenly over the top. Cover and let rest for 5 minutes until the cheese melts. Serve hot straight from the crockpot.
