Tender ziti baked with Italian sausage, marinara, ricotta, and sour cream for a rich, creamy pasta bake. Topped with Mozzarella and Parmesan until golden and bubbling.
Heat the oven to 400°F and grease a 9x13 baking dish, set aside.
Bring a large pot of salted water to a boil, add the pasta and cook until almost al dente. Drain well and set aside.
Heat a large, deep skillet over medium. Add the sausage and cook for 3–5 minutes, breaking it up with a wooden spoon. Add the chopped onion and cook for 2 minutes, until softened. Stir in the garlic, oregano, and red pepper flakes (if using), and cook for 30–60 seconds, just until the garlic is fragrant.
Stir in the marinara sauce and bring to a gentle simmer. Cook for 15 minutes, stirring occasionally, until the sauce thickens slightly and the flavors meld.
Meanwhile:
In a bowl, combine the ricotta, sour cream, salt, pepper, and 1 cup of the mozzarella. Remove the sauce from the heat and stir in the ricotta mixture until fully combined.
Drain the cooked ziti and add it to the sauce, tossing well to coat. Transfer the pasta to the prepared baking dish.
Combine the remaining 1 cup of Mozzarella cheese with the Parmesan cheese and distribute evenly over the top.
Place the dish, uncovered, on a rimmed baking sheet and transfer to the oven. Bake for 20-25 minutes until bubbly around the edges. Remove from the oven and allow it to rest for 5-10 minutes before serving.
Notes
Pasta swaps: Any tubular pasta works (penne, rigatoni, or even elbows in a pinch).Salt the pasta water well: It’s your one shot to season the noodles.Spice it up: Add more red pepper flakes if you like extra heat.Grate your own cheese: Pre-shredded cheese contains anti-caking agents that can affect melting.Optional finish: For a browned, slightly crisp top, broil the dish for 1–2 minutes at the end. Watch closely to avoid burning.