Cooking Instructions

• Heat the oven to 450 degrees F.
• Oil a 9-by-13-inch baking dish.
• In a large pot of boiling, salted water, cook the rigatoni until almost done, about 12 minutes.
• Drain.
• Put the pasta in the prepared baking dish and toss with 1 tablespoon of the oil.
• Meanwhile, squeeze as much of the water as possible from the spinach.
• Put the spinach in a food processor and puree with the ricotta, 3 tablespoons of the Parmesan, the nutmeg, salt, and pepper.
• Stir in half the fontina.
• Stir the spinach mixture into the pasta.
• Top with the remaining fontina and Parmesan.
• Drizzle the remaining 2 tablespoons oil over the top.
• Bake the pasta until the top is golden brown, 15 to 20 minutes.
• You can substitute another chunky pasta, such as penne rigate, penne, ziti, or fusilli. Boil all of these one or two minutes less.