01 -
Set oven temperature to 350°F (180°C).
02 -
Pour out about 1/4 cup from the bottle of passata to allow room for other ingredients. Add olive oil, minced garlic, onion powder, garlic powder, dried Italian mixed herbs, chili flakes if using, sugar, salt, and black pepper directly into the passata bottle. Replace the lid and shake well to combine.
03 -
Boil ziti in a large pot of salted water for one minute less than the package directions. Reserve one cup of cooking water, drain pasta, and set aside.
04 -
In a very large mixing bowl, combine ricotta cheese, grated parmesan, crushed garlic, thawed chopped spinach, shredded mozzarella, and 3/4 teaspoon salt and black pepper. Stir until mixture is smooth, adding a splash of reserved pasta water if needed to achieve a creamy consistency.
05 -
Add drained pasta to the ricotta mixture and stir together. Transfer to a large heatproof baking dish in an even layer.
06 -
Pour pasta sauce evenly over the pasta and ricotta mixture. Sprinkle the top with 1 1/2 cups shredded mozzarella cheese.
07 -
Cover dish loosely with aluminum foil. Bake in the preheated oven for 25 minutes. Remove foil and bake for an additional 10 minutes until the cheese is melted and bubbling.
08 -
Let pasta stand for several minutes before serving hot. Top with extra grated parmesan if desired.