Instant Pot Baked Ziti builds a sausage-and-tomato pasta base under pressure, then finishes it with ricotta and mozzarella in a bubbling 350°F casserole. The important sequence is deliberate: brown the sausage, layer dry ziti and water, add the sauces without stirring, pressure-cook for 4 minutes, then introduce the cheeses.
The recipe makes 10 generous servings. Preparation takes 10 minutes, cooking takes 40 minutes, and the total is 50 minutes. It uses the same quantities in a 6-quart or 8-quart pressure cooker.
Instant Pot Baked Ziti Ingredients
For the sausage base, gather 1 tablespoon olive oil, ½ cup chopped onion, 1 pound Italian sausage removed from its casings, 2 minced garlic cloves, 2 teaspoons Italian seasoning, and a pinch of red pepper flakes.
Use 16 ounces ziti, 3 cups water, 32 ounces marinara sauce, and one undrained 15-ounce can diced tomatoes. The cheese layers require 15 ounces whole-milk ricotta and 3 cups shredded mozzarella. Add optional dried parsley plus salt and pepper to taste.
If you enjoy this recipe, you may also like Smoked Sausage Alfredo Pasta.
How to Make Instant Pot Baked Ziti
- Use SAUTÉ mode. When Hot, add olive oil and onion for 3–4 minutes, then brown sausage until no pink remains.
- Add garlic, Italian seasoning, and red pepper flakes for 1 minute.
- Turn off the pot and deglaze if needed. Layer uncooked ziti over sausage and pour in 3 cups water.
- Add marinara and undrained tomatoes on top. Do not stir. Seal and pressure-cook 4 minutes, then quick-release carefully.
- Stir; add half the ricotta and 1 cup mozzarella.
- Heat oven to 350°F. Put half the ziti in a greased casserole, add remaining ricotta and blend gently, then add remaining mozzarella and optional parsley.
- Bake 20–25 minutes and rest 10 minutes.
For food-safety guidance while cooking, use the USDA safe minimum temperature chart.
Soften One-Half Cup Onion
Brown One Pound Italian Sausage
Cook the Aromatics for One Minute
Deglaze the Insert Completely
Layer Sixteen Ounces Dry Ziti
Add Marinara and Undrained Tomatoes
Pressure-Cook for Four Minutes
Add the First Cheese Portion
Build the Casserole Layers
Use All Three Cups Mozzarella Correctly
Bake Twenty to Twenty-Five Minutes
Rest for Ten Minutes
Understand the Optional No-Bake Finish
Keep the Fifty-Minute Schedule Accurate
Conclusion
Sauté onion in olive oil for 3–4 minutes, brown 1 pound sausage, then add garlic and seasonings for 1 minute. Deglaze. Layer 16 ounces ziti, 3 cups water, 32 ounces marinara, and undrained tomatoes without stirring. Pressure-cook 4 minutes and quick-release. Stir in half the ricotta and 1 cup mozzarella. Layer in a casserole with remaining ricotta, top with remaining mozzarella, bake at 350°F for 20–25 minutes, and rest 10 minutes.
Frequently Asked Questions
- → Why should the sauce not be stirred before pressure cooking?
Keeping marinara and tomatoes on top helps prevent thick tomato sauce from sticking to the hot bottom and triggering a burn warning.
- → How long does the ziti pressure-cook?
Set PRESSURE COOK for exactly 4 minutes, then use a careful quick release or a gradual release if liquid sprays.
- → How is the mozzarella divided?
Stir 1 cup into the cooked pasta and use the remaining 2 cups over the casserole before baking.
- → How many servings does this recipe make?
It makes 10 generous servings in a listed total time of 50 minutes.