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Easy Creamy Spinach Mushroom Lasagna

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  • Author: Olivia
  • Prep Time: 25 minutes
  • Cook Time: 40 minutes
  • Total Time: 1 hour 5 minutes
  • Yield: 6–8 servings
  • Category: Main Course
  • Method: Baking
  • Cuisine: Italian-Inspired
  • Diet: Vegetarian

Description

Easy Creamy Spinach Mushroom Lasagna is a comforting, veggie-packed twist on the classic, layered with sautéed mushrooms and spinach, creamy béchamel sauce, and rich cheeses. It’s hearty and satisfying without tomato sauce, perfect for family dinners or make-ahead meals.


Ingredients

  • 9 lasagna noodles (regular or no-boil)
  • 2 tablespoons olive oil or butter
  • 12 ounces fresh mushrooms, sliced (cremini or button)
  • 5 cups fresh spinach (or 10 ounces frozen, thawed and drained)
  • 3 garlic cloves, minced
  • 1 ½ cups ricotta cheese
  • 2 cups grated mozzarella cheese
  • ½ cup grated Parmesan cheese (plus more for topping)
  • 3 cups milk (whole or 2%)
  • ¼ cup all-purpose flour
  • ¼ cup butter (if making béchamel separately)
  • 1 teaspoon salt
  • ½ teaspoon black pepper
  • Pinch of ground nutmeg (optional)

Instructions

  1. Preheat oven to 375°F (190°C). Cook lasagna noodles if not using no-boil, and set aside.
  2. Heat olive oil or butter in a large skillet over medium heat. Add mushrooms and sauté until golden and moisture has evaporated, about 8 minutes.
  3. Add garlic and spinach to the skillet. Cook until spinach is wilted, then set mixture aside.
  4. In a saucepan, melt butter, whisk in flour to form a roux, and cook for 1 minute. Gradually whisk in milk and cook until thickened, about 5–7 minutes. Season with salt, pepper, and nutmeg. Stir in Parmesan cheese.
  5. To assemble, spread a thin layer of white sauce on the bottom of a 9×13-inch baking dish. Layer noodles, mushroom-spinach mixture, dollops of ricotta, mozzarella, and white sauce. Repeat layers, ending with noodles and remaining sauce. Top with mozzarella and additional Parmesan.
  6. Cover with foil and bake for 25 minutes. Uncover and bake an additional 15 minutes until bubbly and golden on top.
  7. Let rest for 10 minutes before slicing and serving.

Notes

  • Add zucchini or roasted red peppers for more vegetables.
  • Mix in rotisserie chicken or lentils for added protein.
  • Use a mix of cheeses like fontina or provolone for variety.
  • Freeze unbaked or baked lasagna for up to 2 months.
  • Let it rest after baking to help layers set and avoid watery slices.

Nutrition

  • Serving Size: 1 slice
  • Calories: 420
  • Sugar: 5g
  • Sodium: 600mg
  • Fat: 24g
  • Saturated Fat: 13g
  • Unsaturated Fat: 10g
  • Trans Fat: 0g
  • Carbohydrates: 30g
  • Fiber: 3g
  • Protein: 21g
  • Cholesterol: 60mg