Instant Pot Baked Ziti is the kind of weeknight comfort that feels special without fuss. Tender pasta, rich tomato sauce, savory seasoned sausage, and gooey cheese come together in one pot for a meal the whole table will devour. This version uses an electric pressure cooker to cut the active time dramatically, while still delivering those cozy, baked-ziti flavors you love.

This recipe is written for one standard 6-quart electric pressure cooker and uses ingredients you can find at most grocery stores. The approach is straightforward: brown the sausage and aromatics, build a robust tomato base, layer in pasta and liquids, pressure-cook until perfectly tender, and finish with creamy ricotta and melted mozzarella for that irresistible, bubbly top.

Why this Instant Pot Baked Ziti works

Instant Pot recipes often trade a bit of texture for huge convenience. Here, the ziti cooks directly in the sauce so it soaks up flavor while staying uniformly tender. Using two types of canned tomatoes and a hit of tomato paste gives depth without extra steps. Quick browning of the sausage and onions ensures a flavor foundation, while finishing under the broiler or a few minutes of high-heat in the oven creates the melty, golden cheese crust you expect from baked ziti.

Ingredients

Note: Ingredient names and amounts are taken directly from the recipe source. Follow the instructions below exactly to preserve balance and yield.

1 tablespoon olive oil
1 lb mild or spicy Italian sausage casings removed
1 medium onion chopped
2 cloves garlic minced
1 teaspoon dried Italian seasoning
1 teaspoon dried oregano
½ teaspoon kosher salt
¼ teaspoon black pepper
24 oz. crushed tomatoes
15 oz can diced tomatoes with juices
2 tablespoons tomato paste
1 lb ziti pasta
2 cups water
2 cups shredded mozzarella cheese
¾ cup ricotta cheese

Prep notes

Have the sausage casings removed and the onion chopped before you start. Mince the garlic, measure the spices, and open the cans so everything is ready to go. For a smoother finishing texture, shred the mozzarella yourself. If you prefer a little extra punch, choose spicy Italian sausage; for a milder crowd, use mild Italian sausage.

Step-by-step directions

Follow these rewritten, clear steps to make the recipe. The order keeps the original flow: sauté, combine, pressure-cook, and finish.

Set up and heat the pot. Put your 6-quart electric pressure cooker on the Sauté setting and let it warm briefly. Add 1 tablespoon olive oil and allow it to shimmer for about 30 seconds so the oil coats the bottom of the insert.
Brown the sausage. Add 1 lb mild or spicy Italian sausage with the casings removed. Use a wooden spoon or spatula to break the meat into small pieces as it cooks. Sauté until the sausage is nicely browned and no longer pink, about 5–7 minutes. If the pot looks too greasy, carefully spoon off excess fat, leaving a little to flavor the dish.
Sauté onion and garlic. Add 1 medium onion chopped to the browned sausage. Cook, stirring occasionally, until the onion is softened and translucent, about 3–4 minutes. Stir in 2 cloves garlic minced and cook for about 30–45 seconds until fragrant—don’t let the garlic burn.
Add dried herbs and seasonings. Sprinkle in 1 teaspoon dried Italian seasoning, 1 teaspoon dried oregano, ½ teaspoon kosher salt, and ¼ teaspoon black pepper. Stir to coat the sausage and onion mixture so the dried herbs can bloom for 30–45 seconds.
Build the tomato base. Pour in 24 oz. crushed tomatoes and the 15 oz can diced tomatoes with juices. Add 2 tablespoons tomato paste and stir thoroughly to combine and dissolve the paste into the sauce so you have an even consistency.
Add the pasta and water. Pour in 1 lb ziti pasta, spreading it out so the pieces lie as flat as possible. Pour 2 cups water over the pasta. Do not stir at this point; instead, push the pasta gently down into the sauce with a spatula so most of it is submerged. A few pieces above the surface are okay, but try to eliminate large dry pockets.
Lock the lid and pressure cook. Secure the pressure cooker lid and set the valve to the sealing position. Cook on High Pressure for 5 minutes. Once the cook time completes, allow a 5-minute natural release—do not open the valve immediately. After 5 minutes, perform a quick release by carefully turning the valve to venting to release any remaining pressure. When the lid unlocks, open and check the pasta for tenderness.
Stir and add cheeses. Give the pasta a good stir to evenly distribute sauce and break up any clumped pieces. Spoon in ¾ cup ricotta cheese and gently fold it into the pasta until ribboned through the sauce. Sprinkle 2 cups shredded mozzarella cheese evenly over the top.
Melt the cheese and brown the top. If your pressure cooker has a Sauté/Keep Warm lid broil function and you prefer a slightly browned top, you can switch to the Sauté setting for a minute or two until the cheese begins to bubble. For a classic browned crust, transfer the inner pot to a preheated oven broiler on low or high and broil for 3–5 minutes, watching closely until the mozzarella is melted and golden in spots. Alternatively, you can use a kitchen torch to brown the cheese if you prefer.
Rest and serve. Remove the pot from heat or take the inner pot out of the oven. Let the baked ziti rest for 3–5 minutes; this helps the sauce set slightly and makes serving easier. Scoop portions onto plates and, if you like, garnish with a little extra shredded mozzarella, a sprinkle of dried oregano, or a few torn basil leaves.

Tips for success

Do not overcook the pasta: The short pressure time keeps ziti from turning mushy. If your pasta variety cooks faster, reduce the pressure time by a minute.
Even submersion matters: Push the ziti down into the sauce so liquid reaches the pieces; the pasta needs contact with the liquid to cook through under pressure.
Cheese layering: Stirring ricotta in before topping with mozzarella creates creamy pockets amid the saucy pasta. If you prefer pockets of ricotta, spoon dollops on top instead of stirring fully.
Broiling caution: Keep a close eye under the broiler—cheese goes from melted to burned quickly.
Make-ahead: You can assemble through the pressure-cook step, cool, and refrigerate. Reheat in the pressure cooker on a short steam cycle or heat in a 350°F oven until warmed through, then broil to refresh the cheese topping.

Flavor variations

This Instant Pot Baked Ziti is a perfect base for customization:

Vegetable boost: Stir in 1–2 cups of baby spinach or chopped kale after pressure-cooking and let the residual heat wilt it. Sautéed mushrooms or bell peppers added with the onion create extra depth if you want more veg in the dish.
Sausage swap: Use a plant-based Italian-style sausage for a vegetarian option. Keep the same quantity and follow the same browning step.
Herb lift: Add a tablespoon of chopped fresh basil or parsley just before serving for a bright finish.
Spice lift: Add crushed red pepper flakes with the dried herbs if you like extra heat.

Make it ahead and store

Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat individual portions in the microwave or rewarm in a 350°F oven until heated through; top with a little extra cheese and broil for a minute to revive that just-baked finish. To freeze, portion into freezer-safe containers for up to 2 months. Thaw overnight in the refrigerator before reheating.

Serving suggestions

Serve with a crisp green salad dressed in a light vinaigrette to cut through the richness.
Garlic bread or warm ciabatta are classic partners—use them to scoop up any leftover sauce.
A simple side of roasted vegetables, like broccoli or asparagus, pairs nicely to balance the meal.

Notes on ingredient choices

The recipe uses mild or spicy Italian sausage for savory depth. If you prefer to avoid pork-based products, choose an equivalent ground sausage made from beef or chicken seasoned in the Italian style; follow the same amount and preparation steps. The cheeses here are traditional for baked ziti—ricotta brings creaminess while shredded mozzarella gives the melty top. Use whole-milk versions for the richest texture.

Quick reference — timing

Active prep: 10–15 minutes
Pressure cook time: 5 minutes plus 5-minute natural release and a quick release
Finish under broiler or oven: 3–5 minutes (optional)
Total: about 30–35 minutes from start to table

Final thoughts

This Instant Pot Baked Ziti is generous, crowd-pleasing, and surprisingly quick. It captures the soul-satisfying qualities of traditional baked ziti—meaty sauce, tender pasta, creamy ricotta, and gooey mozzarella—while trimming the hands-on time with pressure cooking. Whether you’re feeding a family on a busy weeknight or doubling it for a potluck, this recipe is built to please and easy to adapt to pantry and dietary preferences.

Gather the ingredients, fire up your pressure cooker, and in about half an hour you’ll have a bubbling, comforting casserole ready to serve. Enjoy a hearty bowl and the simple satisfaction that comes from making a classic dish faster, without sacrificing flavor.

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Instant Pot Baked Ziti

Hearty baked ziti made quickly in the Instant Pot with Italian sausage, tomato sauce, and creamy cheeses.

Prep Time10

Cook Time6

Total Time16

Servings: 6 servings

Ingredients

1 tablespoon olive oil
1 lb mild or spicy Italian sausage casings removed
1 medium onion chopped
2 cloves garlic minced
1 teaspoon dried Italian seasoning
1 teaspoon dried oregano
1/2 teaspoon kosher salt
1/4 teaspoon black pepper
24 oz crushed tomatoes
15 oz diced tomatoes with juices
2 tablespoons tomato paste
1 lb ziti pasta
2 cups water
2 cups shredded mozzarella cheese
3/4 cup ricotta cheese

Instructions

Place the Instant Pot stainless steel insert in the cooker and select the Sauté setting; add the olive oil and heat until shimmering.
Add the chopped onion and minced garlic and sauté until the onion is almost translucent, about 3–4 minutes.
Stir in the dried Italian seasoning and oregano.
Add the Italian sausage (casings removed) and cook, breaking it up with a wooden spoon, until no longer pink and browned bits form on the bottom.
Press Cancel/Off. Pour 1/4 cup water into the pot and scrape the browned bits from the bottom to deglaze.
Pour in the ziti and 2 cups water and stir to combine.
Pour the diced tomatoes (with juices) over the pasta, add the tomato paste and crushed tomatoes, but do not stir after adding the tomato cans.
Close the lid, set the valve to Sealing, select Manual (or Pressure Cook) and set the timer for 6 minutes.
When the cooking time ends, press Off/Cancel then quick-release the pressure by switching the valve to Venting; when the float drops, open the lid carefully.
Stir in the shredded mozzarella and ricotta until evenly combined; season with kosher salt and black pepper to taste.
Serve immediately, optionally topped with fresh basil and grated Parmesan if desired.