A baked ziti casserole is the kind of pasta bake that solves dinner with one dish and almost no fuss. It layers ridged ziti with a meaty tomato sauce, creamy ricotta, and a blanket of melted mozzarella that browns on top. This version is built for a standard 9×13 pan, feeds six people, and reheats better than most fresh-cooked pasta.
The structure matters more than the extras. Ziti holds sauce in its grooves, ricotta keeps the middle soft, and a final layer of mozzarella gives you that pull-apart cheese stretch. If you want a reliable weeknight dinner, this baked ziti casserole is worth keeping in your rotation alongside other high protein casserole recipes.
Why You’ll Love These Baked Ziti Casserole
- One pan handles the whole meal, so cleanup stays short.
- Ricotta and mozzarella keep the pasta from drying out during baking.
- It freezes solid for up to 2 months before the cheese layer goes on.
- You can assemble it the night before and bake when needed.
- Leftovers reheat into a lunch that tastes close to fresh.
Ingredients You’ll Need
- 1 pound (450g) ziti pasta — the ridges grip sauce better than smooth penne
- 1 tablespoon olive oil — used to brown the sausage and soften the onion
- 1 pound (450g) Italian pork sausage, casings removed — gives the sauce fat and salt
- 1 medium yellow onion, diced — builds a sweet base under the tomatoes
- 3 cloves garlic, minced — added late so it stays sharp, not burnt
- 24 ounces (680g) marinara sauce — use a low-sugar jarred sauce to control sweetness
- 15 ounces (425g) whole-milk ricotta — full fat keeps the center creamy, not grainy
- 1 large egg — binds the ricotta so it sets instead of weeping
- 2 cups (200g) shredded low-moisture mozzarella — low moisture browns instead of steaming
- 1/2 cup (50g) grated Parmesan — adds a salty crust on the edges
- 1 teaspoon salt, divided — half for pasta water, half for ricotta
- 1/2 teaspoon black pepper — mixed into the ricotta layer
Ingredient Substitutions
Italian pork sausage: Replace with 1 pound of ground turkey plus 1 teaspoon fennel seed and 1/2 teaspoon red pepper flakes. Turkey is leaner, so the sauce will look less glossy and the bake will be slightly drier at the edges. Add the fennel to mimic sausage’s anise note, and expect a lighter chew with less rendered fat in the pan. Making this baked ziti casserole at home is surprisingly straightforward once you know the key steps.
Whole-milk ricotta: Swap for an equal weight of cottage cheese blended smooth for 30 seconds. Cottage cheese is tangier and releases more water, so strain it through a sieve first or the center turns loose. The bake still sets, but the middle tastes brighter and a little less rich. The baked ziti casserole works well for weeknight cooking when time is limited.
Low-moisture mozzarella: Use the same weight of shredded fontina for a softer, more elastic melt. Fontina browns faster, so check the top at 20 minutes instead of waiting the full time. The pull is less stringy but the flavor is deeper and a bit nutty.
Marinara sauce: Replace with 24 ounces of crushed tomatoes plus 1 teaspoon dried oregano and 1/2 teaspoon sugar. Crushed tomatoes are thinner, so simmer the sauce 5 minutes longer to thicken before mixing with pasta. The result is fresher and less sweet than jarred marinara. If you enjoyed this, our garlic butter baked is worth trying next.
Step-by-Step Instructions
- Bring 4 quarts of water to a rolling boil and add 1/2 teaspoon salt. Cook the ziti for 9 minutes so it stays firm, then drain and set aside.
- Warm 1 tablespoon olive oil in a 12-inch skillet over medium heat. Add the sausage and break it up with a spoon until it loses pink, about 6 minutes, then push it to the side.
- Drop the diced onion into the cleared side of the skillet and cook until translucent, 4 minutes. Stir in the garlic for 30 seconds until it smells sharp, not brown.
- Pour in the marinara sauce and stir with the sausage. Simmer at medium-low heat for 8 minutes until the sauce thickens and bubbles at the edge.
- Mix ricotta, egg, remaining 1/2 teaspoon salt, and black pepper in a bowl until smooth. The egg should disappear into the cheese with no streaks left.
- Spread half the ziti in a 9×13 baking dish. Dollop half the ricotta over it, then half the sauce, then 1 cup mozzarella. Repeat the layers, ending with Parmesan on top.
- Bake at 180°C / 350°F for 25–30 minutes until the cheese is golden and bubbling at the corners. Rest 10 minutes before cutting so the layers hold.
Pro Tips
Undercook the pasta by two minutes under the box time because it keeps cooking in the sauce. Sauce that looks too wet in the pan will tighten as the ziti absorbs it during baking.
Let the assembled dish sit at room temperature for 20 minutes before it goes in the oven if it was cold from the fridge. A cold center slows the bake and can leave the middle lukewarm.
Shred your own mozzarella instead of using pre-bagged cheese. Bagged cheese carries starch that steams rather than browns, and you lose the golden and crispy top edge.
Read technique notes from Bon Appetit on resting baked pasta if you want the science behind the 10-minute wait. The rest sets the ricotta so slices stay clean.
Common Mistakes to Avoid
Boiling the ziti fully before baking turns it to mush because it cooks again for 30 minutes. Pull it at 9 minutes when it still has a firm bite.
Skipping the egg in the ricotta gives you a watery pocket under the cheese. The egg binds the dairy so it sets instead of pooling during the rest.
Covering the dish with foil the whole time stops the top from browning. If you cover early to prevent burning, remove the foil for the last 10 minutes to brown the cheese. For another easy option, check out our traditional baked garlic.
Serving Suggestions
Cut the bake into squares and plate with a simple artichoke hearts side for a green contrast. The salty, crisp edges balance the soft cheese middle.
A loaf of warm bread handles the extra sauce on the plate. Skip a heavy dessert and serve butternut squash pasta another night if you want a similar comfort meal without meat.
Storage and Reheating
Cool the leftovers within 2 hours and store them in an airtight container for up to 3 days. The ricotta keeps the pasta from drying, but the top will firm in the fridge.
Reheat single portions in a 175°C / 350°F oven for 15 minutes until steaming at the center, or microwave at 70% power for 2 minutes. The sausage must reach 74°C / 165°F inside for food safety.
Freeze the unbaked casserole without the final cheese for up to 2 months. Thaw overnight in the fridge, add mozzarella, then bake as written, adding 10 minutes to the time.
Recipe Variations
Spicy Version
Use hot Italian sausage and stir 1/2 teaspoon red pepper flakes into the marinara at step 4. The heat builds in the sauce rather than the cheese, so every bite carries it. Expect a warmer finish that pairs well with a cold salad.
Veggie Add-In
Fold 2 cups of roasted zucchini and bell pepper into the sauce before layering. The vegetables add moisture, so cut the marinara by 4 ounces to keep the bake from loosening. You get more texture and a lighter plate.
White Sauce Swap
Replace the marinara with 2 cups of béchamel and use alfredo sauce style seasoning. The bake turns cream-colored and richer, and the mozzarella browns to a paler gold. Bake at the same temperature but check at 25 minutes since cream sauces heat faster.
Make-Ahead Freezer
Assemble the full dish except the top cheese, wrap in two layers of foil, and freeze. This baked ziti casserole holds for up to 2 months and goes straight from freezer to oven at 160°C / 325°F for 60 minutes. Add the mozzarella at the 45-minute mark.
Baked Ziti Casserole
Description
This baked ziti casserole layers ridged ziti with a meaty tomato sauce, creamy ricotta, and a blanket of melted mozzarella that browns on top. Built for a standard 9x13 pan, it feeds six and reheats better than most fresh-cooked pasta.
Ingredients
Instructions
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Boil the ziti
Bring 4 quarts of water to a rolling boil over high heat and add 1/2 teaspoon salt. Cook the ziti for 9 minutes so it stays firm with a bite, then drain and set aside; the pasta should be pliable but not soft enough to fold easily since it cooks more in the oven.
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Brown sausage and onion
Warm 1 tablespoon olive oil in a 12-inch skillet over medium heat. Add the sausage and break it up with a spoon until it loses pink and reaches 71°C/160°F inside, about 6 minutes, then push it to the side and drop the diced onion into the cleared side, cooking until translucent, 4 minutes.
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Add garlic and sauce
Stir the minced garlic into the skillet for 30 seconds until it smells sharp and not brown. Pour in the marinara sauce and stir with the sausage, then simmer at medium-low heat for 8 minutes until the sauce thickens and bubbles at the edge.
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Mix ricotta layer
Mix ricotta, egg, remaining 1/2 teaspoon salt, and black pepper in a bowl until smooth. The egg should disappear into the cheese with no streaks left, creating a bound filling that sets instead of weeping during baking.
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Layer the casserole
Spread half the ziti in a 9x13 baking dish. Dollop half the ricotta over it, then half the sauce, then 1 cup mozzarella; repeat the layers, ending with Parmesan on top.
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Bake the ziti
Bake at 180°C / 350°F for 25–30 minutes until the cheese is golden and bubbling at the corners. The sausage throughout should reach 74°C/165°F for food safety if checked.
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Rest before cutting
Rest the baked dish for 10 minutes before cutting so the layers hold. The ricotta will set further during this time, giving clean slices that do not collapse.
Nutrition Facts
Servings 6
- Amount Per Serving
- Calories 620kcal
- % Daily Value *
- Total Fat 34g53%
- Saturated Fat 16g80%
- Cholesterol 135mg45%
- Sodium 1150mg48%
- Total Carbohydrate 48g16%
- Dietary Fiber 4g16%
- Sugars 9g
- Protein 34g68%
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.
Note
- Storage: Cool leftovers within 2 hours and store in an airtight container for up to 3 days; reheat single portions in a 175°C oven for 15 minutes until steaming at center or microwave at 70% power for 2 minutes, reaching 74°C/165°F for the sausage.
- Make ahead: Assemble except top cheese, freeze up to 2 months, and bake from frozen at 160°C for 60 minutes adding mozzarella at 45 minutes.
- Pro tip: Shred your own mozzarella to avoid bagged starch that steams instead of browns, and pair with artichoke hearts for a green side.
- Rest: Let the baked casserole sit 10 minutes so ricotta sets and slices stay clean.
