Ingredients

  • 10 plum tomatoes, halved lengthwise
  • 14 cup extra-virgin olive oil
  • 1 teaspoon dried oregano
  • 3 garlic cloves, thinly sliced
  • coarse salt
  • ground pepper
  • 12 medium butternut squash, peeled, seeded, and sliced 1/4-inch thick
  • 2 lbs spinach, trimmed and washed
  • 15 ounces whole-milk ricotta cheese
  • 12 cup parmesan cheese, grated
  • 1 egg
  • 14 teaspoon ground nutmeg
  • 9 -12 no-boil lasagna noodles
  • 12 lb mozzarella cheese, cut into pieces

Method

  • Preheat oven to 400F, with racks in upper and lower thirds.
  • On a rimmed baking sheet, toss tomatoes with 2 tablespoons oil, oregano, and 2/3 of the garlic; season with salt and pepper.
  • Brush another rimmed baking sheet with 1 tablespoon oil.
  • Arrange squash in one layer, season with salt and pepper.
  • Roast squash until tender, about 20 minutes, and tomatoes until slightly shriveled, about 40 minutes, rotating sheets halfway through.
  • In a blender, puree the tomato halves.
  • Season with salt and pepper; set aside.
  • In a large skillet, heat 1 tablespoon oil over medium-high heat.
  • Add remaining garlic and cook, stirring, for 30 seconds.
  • Gradually add the spinach and toss until wilted, about 4 minutes.
  • Transfer spinach to a strainer and press to release liquid.
  • When cool, chop spinach and season with salt and pepper.
  • In a large bowl, mix ricotta, 1/4 cup Parmesan, egg, and nutmeg until smooth; season with salt and pepper.
  • Lightly oil a 9-inch square baking dish.
  • Spread 1/4 of the tomato sauce in dish, top with 3-4 noodles, breaking to fit as needed.
  • Top with half the ricotta mixture, the squash, 1/4 of the tomato sauce, and 3-4 noodles.
  • Top with remaining ricotta mixture, cooked spinach, 1/4 of the sauce, and 3-4 noodles.
  • Top with remaining sauce, the mozzarella, and 1/4 cup Parmesan.
  • Set rack in the middle of oven.
  • Bake on a rimmed baking sheet until golden brown, about 30-35 minutes.
  • Let cool 15 minutes before serving.