Portobello Mushroom and Spinach Lasagna is a delicious, meat-free alternative to classic lasagna, perfect for a cozy family dinner.
Sautรฉed Portobello mushrooms provide a meaty texture and rich flavor, complemented by tender spinach and creamy ricotta cheese.
Layered with marinara sauce and melted mozzarella, this baked dish offers comforting Italian flavors that are easy to prepare at home.
Why Youโll Love This Recipe
- Using sautรฉed Portobello mushrooms adds a robust umami depth, replacing traditional meat in the dish.
- Fresh spinach provides a vibrant, nutritious complement, balancing the richness of the cheeses and sauce.
- Layering with ricotta and mozzarella creates creamy, melty textures that bind the ingredients deliciously together.
- Baking the assembled lasagna until bubbly ensures a warm, satisfying meal with beautifully melded flavors.
Portobello Mushroom and Spinach Lasagna
This hearty vegetarian lasagna layers sautรฉed Portobello mushrooms and spinach with creamy ricotta, marinara sauce, and cheeses for a comforting Italian dinner.
- Prep time
- 20 minutes
- Cook time
- 45 minutes
- Servings
- 6
- Yield
- One 9×13 inch lasagna (6 servings)
Ingredients
- 4 large Portobello mushroom caps, cleaned and sliced (about 12 oz / 340 g)
- 2 tablespoons olive oil
- 3 cloves garlic, minced
- 6 cups fresh spinach (about 180 g)
- 1 teaspoon dried oregano
- 1 teaspoon dried basil
- Salt and black pepper to taste
- 15 ounces ricotta cheese (425 g)
- 1 large egg
- 2 cups shredded mozzarella cheese (200 g)
- 1/2 cup grated Parmesan cheese (50 g)
- 3 cups marinara sauce (720 ml)
- 9 no-boil lasagna noodles
Instructions
- Prepare the mushroom and spinach filling Heat olive oil in a large skillet over medium heat. Add the minced garlic and cook for 1 minute until fragrant. Add sliced Portobello mushrooms and sautรฉ for 6-8 minutes until softened and browned. Add fresh spinach, dried oregano, dried basil, salt, and pepper; cook until spinach wilts, about 3 minutes. Remove from heat and set aside.
- Prepare ricotta mixture In a medium bowl, combine ricotta cheese with the egg and a pinch of salt and pepper. Mix until smooth.
- Assemble the lasagna Preheat oven to 375ยฐF (190ยฐC). Spread 1/2 cup marinara sauce evenly in the bottom of a 9×13 inch baking dish. Layer 3 no-boil lasagna noodles over the sauce. Spread half the ricotta mixture over the noodles. Spoon half the mushroom and spinach mixture over the ricotta. Sprinkle with 1/3 of the shredded mozzarella. Repeat layering: noodles, remaining ricotta, remaining mushroom and spinach, 1/3 mozzarella. Top with last 3 noodles, remaining marinara sauce, mozzarella, and Parmesan cheese.
- Bake Cover the dish with foil and bake in the preheated oven for 30 minutes. Remove the foil and bake an additional 15 minutes until cheese is melted and bubbly with a golden crust.
- Cool and serve Let the lasagna cool at room temperature for at least 10 minutes before slicing and serving. This resting time helps the layers set for cleaner slices.
Helpful Tips
- Use no-boil noodles to simplify preparation; if using regular noodles, pre-cook according to package instructions.
- For extra flavor, add a pinch of red pepper flakes when sautรฉing mushrooms.
- Leftover lasagna can be warmed gently in the oven or microwave; adding a splash of marinara helps maintain moisture.
Storage and Make-Ahead
Refrigerate leftovers in an airtight container for up to 3 days.
Reheat leftovers until internal temperature reaches 165ยฐF (74ยฐC) before serving to ensure food safety.
Do not freeze assembled lasagna as texture may degrade; cooked leftovers can be frozen for up to 2 months.
Frequently Asked Questions
Can I use other mushrooms instead of Portobello?
Yes, cremini or button mushrooms work as alternatives, though Portobellos provide the best meaty texture and flavor.
Do I have to use no-boil noodles?
No-boil noodles are convenient and absorb moisture during baking, but regular noodles cooked to al dente can be used instead.
Is this lasagna suitable for people with dairy allergies?
No, this recipe contains ricotta, mozzarella, and Parmesan cheeses and is not suitable for dairy-free diets.











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