Sheet Pan Lasagna

PREP TIME:
10 minutes

SERVES:

6

TOTAL COOKING TIME:

50 minutes
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INGREDIENTS
  • 4 tbsp olive oil, divided.
  • 1/2 teaspoon kosher salt, plus more for the pasta water
  • 1 lb lasagne noodles broken into 2-inch pieces
  • 1 clove garlic, chopped
  • 1 tsp red pepper flakes
  • 5-oz bag baby spinach (approx. 1/2 bag)
  • 1 cup ricotta cheese
  • 1 lb Italian sausage, casings removed
  • 1 red onion, diced
  • 4 cups jarred marinara sauce
  • 2 1/2 cups low moisture Mozzarella, shredded
  • 1 1/2 cups Parmesan cheese, divided

DIRECTIONS

  1. 1.
    Preheat oven to 425 degrees. Oil a straight sided 12 x 17-inch baking sheet with 1 tbsp olive oil.
  2. 2.
    Heat a medium skillet over medium heat. Add 1 tbsp oil along with garlic and pepper flakes to the hot pan. Cook, stirring often until fragrant, about 1 minute. Add spinach and salt and cook, stirring often, until spinach is almost completely wilted (another minute). Remove spinach mixture to a strainer and press firmly to remove any excess liquid. Place spinach in a medium bowl. Using a pair of kitchen scissors, slice up spinach into chopped pieces. Add ricotta cheese and stir to combine. Set aside.
  3. 3.
    Using a paper towel, wipe out the skillet and bring it back to medium heat. Add remaining 2 tbsp of oil to the pan along with sausage and cook, undisturbed until sausage is beginning to brown on the first side, about 3 minutes. Using a wooden spoon, break apart the sausage into bite sized pieces. Continue to cook, stirring often and breaking apart as needed, until sausage is lightly browned, another 5 minutes. Add onion to the pan and cook until onion is fragrant and beginning to soften, another 3 minutes. Remove from heat..
  4. 4.
    Meanwhile, bring a large pot of water to a boil over high heat. Be sure it is large enough pan to allow the pasta to swim freely. Season generously with salt. Cook the pasta for 4 minutes stirring often to avoid clumping. Drain well, reserving 1/2 cup of pasta water.
  5. 5.
    While pasta is cooking, add marinara to the pan with sausage and onion and mix well. Add the pasta water, pasta, 1 cup Mozzarella cheese and 1/2 cup Parmesan cheese to same pan and stir to combine.
  6. 6.
    Spread entire mixture on the prepared 12x17-inch baking sheet. Dollop the pasta with the ricotta-spinach mixture, and sprinkle with remaining 1 1/2 cups Mozzarella and 1 cup Parmesan cheeses. Bake until pasta is tender, the sauce is bubbly, and the top is lightly browned, about 30 minutes. Remove from oven and let rest for 5 minutes before cutting into squares and servings. Serve with extra warm marinana if desired.