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Delicious Invisible Butternut Squash Spinach Lasagna with golden cheese topping, layered butternut squash recipes, and vibrant spinach lasagna variations for healthy vegetarian casseroles.

Healthy Squash Spinach Lasagna Recipe – Low-Carb and Delicious

A pasta-free, veggie-packed lasagna featuring thinly sliced butternut squash as 'invisible' layers, combined with creamy cheeses, spinach, and mushrooms for a comforting, low-carb twist on a classic dish.
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Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 30 minutes
Servings: 8 servings
Course: Main Course
Cuisine: Vegetarian
Calories: 250
Ingredients Method Notes

Ingredients
  

  • 2 tablespoons olive oil
  • 5 ounces baby spinach roughly chopped
  • 20 ounces baby bella mushrooms sliced
  • 1½ pounds butternut squash peeled and thinly sliced
  • 5 ounces Boursin cheese room temperature
  • 2 eggs
  • ⅓ cup milk
  • ⅓ cup all-purpose flour
  • 1 teaspoon baking powder
  • ½ teaspoon salt
  • ½ teaspoon garlic powder
  • ½ teaspoon onion powder
  • ⅛ teaspoon ground nutmeg
  • 3 tablespoons fresh parsley minced
  • 1 cup shredded mozzarella cheese
  • 2 tablespoons grated parmesan cheese

Method
 

  1. Preheat oven to 400°F (200°C) and grease a 9×13-inch baking dish with olive oil or cooking spray.
  2. Heat 1 teaspoon olive oil in a skillet over medium heat. Sauté spinach for 1–2 minutes until wilted; transfer to a plate.
  3. Add remaining oil and sauté mushrooms for 4–5 minutes until golden; remove from heat.
  4. In a large bowl, whisk Boursin cheese, eggs, and milk until smooth. Stir in flour, baking powder, salt, garlic powder, onion powder, and nutmeg until just combined.
  5. Fold in parsley, spinach, mushrooms, and butternut squash slices until evenly coated.
  6. Spread mixture evenly in the prepared dish. Top with mozzarella and parmesan cheese.
  7. Bake for 40–45 minutes until golden and squash is tender. Let rest 5–10 minutes before slicing and serving.

Notes

For a vegan version, use flax eggs and dairy-free cheese. Substitute gluten-free flour if needed. Slice squash thinly (⅛ inch) for even baking. Store leftovers in the fridge for up to 4 days or freeze portions for 2 months.