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Lasagna served in a white plate
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4.12 from 34 votes

spinach mushroom lasagna

Delicious lasagna packed with spinach, mushrooms, garlic and cheeses pressure cooked in the Instant Pot.
Prep Time10 mins
Cook Time40 mins
Total Time50 mins
Course: Entree
Cuisine: Italian
Servings: 4
Calories: 590kcal


  • 1 tablespoon olive oil
  • 1 medium onion diced
  • 4 garlic cloves minced
  • 8 oz white mushrooms diced, about 2 cups
  • 3 cups frozen chopped spinach
  • 1 teaspoon red pepper flakes optional
  • 9 no-boil oven ready lasagna sheets
  • cup marinara sauce
  • cup part-skim mozzarella cheese divided
  • ½ cup parmesan cheese divided
  • 1 cup low fat ricotta cheese


  • Set Instant Pot to saute mode and heat oil. Add onions and garlic, mix well and cook covered with a glass lid for 2 minutes.
  • Add mushrooms, spinach and red pepper flakes. Cook for another 2 minutes.
  • Take out the sautéed vegetables, draining excess liquids. Keep aside.
  • Quick rinse the Instant Pot insert and dry well both inside and outside.
  • Mix ricotta cheese, ¼ cup of parmesan and 1 cup of mozzarella cheese and keep aside.
  • Add 1 cup of water to the Instant Pot insert. Use the 7” fat daddios cake push pan or similar cake pan.
  • Break 3 pasta sheets and arrange them evenly in the cake pan. Spread ½ cup of pasta sauce over it. Spread half of the spinach-mushroom mixture over the sauce. Spread half of the mixed cheese evenly.
  • Repeat the above starting with pasta, sauce, veggies and cheese.
  • Layer the remaining 3 pasta sheets and tomato sauce. Sprinkle ½ cup of mozzarella and remaining parmesan cheese on top.
  • Cover the cake pan with aluminum foil. Put the cake pan on the trivet and carefully place the trivet inside the Instant Pot. Close Instant Pot with pressure valve to sealing.
  • Pressure Cook for 20 mins followed by 10 minutes Natural Pressure Release. Open Instant Pot and enjoy.


We prefer to use low-fat ricotta and mozzarella cheese and skip the egg. Feel free to use your favorite cheeses, more or less, and add an egg if you like. Broil the lasagna for a couple of minutes to get crispy top if you like. The lasagna will be delicious either way!


Calories: 590kcal | Carbohydrates: 67g | Protein: 37g | Fat: 20g | Saturated Fat: 10g | Cholesterol: 54mg | Sodium: 1121mg | Potassium: 1215mg | Fiber: 8g | Sugar: 9g | Vitamin A: 14800IU | Vitamin C: 17mg | Calcium: 832mg | Iron: 4.9mg
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