
Instant Pot Baked Ziti is an answer to rushed Sunday evenings and hungry crowds. When I first tried this shortcut version, I was desperate for that old-school comfort but had barely an hour before everyone scattered for activities. Now this saucy sausage pasta is our go-to for special meals when time is tight but no one wants to skimp on flavor or tradition.
My sister made this for a team dinner and said it was the first time twelve teenagers actually wanted seconds of something that was not pizza. Now she is the official team pasta maker and even the coach wants the recipe.
Ingredients
- Italian sausage: choose mild or hot as you like for rich flavor and a juicy finish look for fresh sausage from the butcher
- Ziti pasta: tube-shaped pasta holds onto the sauce best pick a quality brand for even cooking
- Good quality pasta sauce: since the sauce is the backbone of the dish buy one with real tomatoes and herbs
- Diced tomatoes: these add little bites of acidity and keep the sauce chunky not soupy choose ones packed in tomato juice not puree
- Whole milk ricotta: creamy texture and rich flavor makes the cheese layers indulgent avoid part-skim for the best melt
- Mozzarella blocks: shred it yourself as it melts smoother and tastes fresher than pre-shredded
- Fresh garlic: provides aromatic depth and savory kick smash and mince for the most flavor
- Yellow onion: the sweetness comes out in sautéing and forms the base use fresh never frozen
- Olive oil: mild oil for sautéing that keeps everything from sticking stick to extra virgin for better aroma
- Dried parsley: optional for sprinkling gives a bit of color and a hint of flavor look for bright green flakes not dull brown
Step-by-Step Instructions
- Building the flavor base:
- Turn the Instant Pot onto sauté and let the inner pot heat until it says Hot Add olive oil and chopped onion Stir frequently and cook on medium low for about eight minutes until the onion is translucent and soft Add the sausage and break it up with a spoon Cook until the sausage is no longer pink and is starting to brown slightly The browning develops flavor
- Adding aromatics:
- Add minced garlic and stir constantly for one minute until you can really smell it Keep a close eye so the garlic does not burn If anything is stuck to the pot scrape with a spoon and a splash of water
- Layering for pressure cooking:
- Pour the uncooked ziti over the sausage spread it out evenly on top Pour water over the pasta to completely cover Add the marinara sauce and diced tomatoes straight on top Do not stir Layering in this order is key for preventing scorched bits
- Pressure cooking magic:
- Secure the Instant Pot lid Seal the valve and set to pressure cook for four minutes It will take extra minutes to build pressure Wait for the timer at the end then carefully use a quick release method to vent steam If thick sauce starts spraying stop and vent more slowly
- Stirring and cheese adding:
- Once it is safe open the lid Stir well to combine the pasta with sauce and sausage Add half of the ricotta cheese in spoonfuls and a cup of shredded mozzarella Stir until the cheese is half melted and creamy
- Transferring for baking:
- Preheat your oven to three hundred fifty degrees Grease a large casserole dish Layer in half of the ziti mixture Dot with the rest of the ricotta Cheese gets soft but keep it in thick layers Spoon on the rest of the ziti
- Final baking step:
- Top everything with the remaining mozzarella and dried parsley Place the dish in the oven Bake for about twenty five minutes until the cheese is bubbling and golden brown Cool for ten minutes before serving so it sets and is easy to scoop

This ziti has so many family memories for me I always think of my oldest pulling up a chair to help shred cheese and sneak little bits before the pan went into the oven Nothing brings everyone to the table quicker than the smell of bubbling cheese and sausage after such a fast prep
Storage Tips
This ziti holds up well in the fridge for up to four days and actually tastes richer the next day because the flavors have more time to mix For the best leftovers store in covered glass containers It also freezes beautifully Slice and wrap portions in foil then tuck inside a freezer bag for up to three months Reheat directly from frozen by baking until hot in the center
Ingredient Substitutions
You can easily swap Italian sausage with ground beef turkey or even vegetarian meat alternatives If you want to go lighter use part skim cheese but expect a bit less creaminess For a chunkier texture add diced bell peppers or mushrooms with the onions If you have only penne on hand that shape works just fine
Serving Suggestions
Baked ziti makes a hearty main all on its own If I am serving a big group I add garlic bread and a crisp green salad For an extra Italian restaurant feel sprinkle on chopped fresh basil just before serving and set out a dish of grated parmesan

Cultural Context
Baked ziti is a staple at Italian American gatherings beloved for its crowd-pleasing flavors and easy assembly The Instant Pot version brings that classic taste home to families who want all the flavor in a quarter of the time My grandmother made hers for every family milestone now I make this version for busy nights when I want those warm memories without the wait
Common Recipe Questions
- → Why should I avoid stirring before pressure cooking?
Layering instead of stirring keeps the pasta from burning or sticking on the bottom and ensures even cooking.
- → Is baking necessary after pressure cooking?
Baking creates the golden, bubbly cheese layer on top, adding texture and classic appeal, but you can skip it for faster serving.
- → Can this dish be made in a 6-quart Instant Pot?
Yes, the same ingredient amounts work in both six- and eight-quart models without adjustment.
- → Are there substitutions for the sausage?
Ground beef, turkey, or mixed meats all work well. Just add extra Italian seasoning for more flavor if needed.
- → How can I prevent mess when releasing the pressure?
If liquid sprays during quick release, try turning the valve slowly or letting the pot rest a few minutes before venting.
- → How should leftovers be stored?
Cooled portions keep well in the fridge for several days or freeze for up to three months. Reheat for rich, melded flavor.