Easy Mushroom Spinach Lasagna for a Cozy Dinner

Easy Mushroom Spinach Lasagna is the ultimate comfort food. After making this many times, I’ve perfected the creamy, cheesy layers. The trick I discovered is using a mix of mushrooms for depth of flavor. This lasagna is cozy, hearty, and perfect for a winter dinner. Keep reading for my best tips, or jump to the recipe card. If you love recipes like this, you’ll also enjoy Easy Mediterranean Tuna Salad Recipe for Quick Dinner and Crispy Asian Tuna Cakes with Spicy Sriracha Aioli.

What You'll Need for Easy Mushroom Spinach Lasagna for a Cozy Dinner

Choosing the right ingredients makes a big difference, but this recipe is forgiving enough to work with what you have.

• 1 lb lasagna noodles
• 1 lb mixed mushrooms
• 10 oz spinach
• 15 oz ricotta cheese
• 8 oz mozzarella cheese
• 1/2 cup grated Parmesan cheese
• 2 cups marinara sauce
• 1 tbsp olive oil
• 1 onion, diced
• 3 cloves garlic, minced
• Salt and pepper, to taste
• 1 tsp dried oregano
• 1 tsp dried basil
• 1/2 tsp red pepper flakes
• Optional: Fresh basil, chopped
• Optional: Grated Parmesan cheese

How to Make Easy Mushroom Spinach Lasagna for a Cozy Dinner

1. Step 1: Preheat your oven to 375°F (190°C). Cook lasagna noodles according to package instructions. Drain and set aside.
2. Step 2: In a large skillet, heat olive oil over medium heat. Add onion and cook until softened. Add garlic and cook for another minute.
3. Step 3: Add mushrooms to the skillet and cook until they release their moisture and begin to brown. Season with salt, pepper, oregano, basil, and red pepper flakes.
4. Step 4: Stir in spinach and cook until wilted. Remove from heat and set aside.
5. Step 5: In a medium bowl, mix ricotta, 1/2 cup Parmesan, salt, and pepper.
6. Step 6: To assemble the lasagna, spread a thin layer of marinara sauce in the bottom of a 9×13-inch baking dish. Arrange a layer of lasagna noodles, followed by a layer of mushroom and spinach mixture, a layer of ricotta mixture, and a layer of mozzarella cheese. Repeat layers, ending with a layer of marinara sauce and the remaining mozzarella and Parmesan cheeses.
7. Step 7: Cover the baking dish with foil and bake for 25 minutes. Remove the foil and bake for an additional 10-15 minutes, or until the cheese is melted and bubbly, and the edges are golden.
8. Step 8: Let the lasagna rest for 10 minutes before serving. Top with fresh basil and additional Parmesan cheese, if desired.

Storing & Reheating Easy Mushroom Spinach Lasagna for a Cozy Dinner

Short-Term Storage

Store in an airtight container in the fridge. Store leftovers in an airtight container in the refrigerator for up to 5 days. Make-ahead tip: You can assemble this lasagna up to 24 hours ahead of time. See pro tip for instructions.

Freezing Easy Mushroom Spinach Lasagna for a Cozy Dinner

Freeze assembled lasagna, without toppings, for up to 3 months. Thaw overnight in the refrigerator before baking.

How to Reheat Without Drying It Out

Oven: Reheat leftovers in a 350°F (175°C) oven for 15-20 minutes, or until heated through. Microwave: Reheat individual portions in the microwave for 1-2 minutes, or until heated through.

Recipe Notes

• Chef tip: For a vegetarian version, omit the cheese or use a vegan alternative.
• Best substitution: You can substitute the mushrooms with spinach and bell peppers for a different flavor profile.
• Make-ahead: See storage section for make-ahead instructions.
• Scaling: This recipe can be easily doubled or halved to serve more or fewer people.
• Troubleshooting: If the lasagna is still cold in the center, cover it with foil and bake for an additional 10-15 minutes.

Easy Mushroom Spinach Lasagna for a Cozy Dinner

⏱

Prep

30 mins

🍳

Cook

45 mins

⏳

Total

1 hr 15 mins

🍽

Serves

8 servings

🥗

Diet

Vegetarian

Ingredients

Main Ingredients

• 1 lb lasagna noodles
• 1 lb mixed mushrooms
• 10 oz spinach
• 15 oz ricotta cheese
• 8 oz mozzarella cheese
• 1/2 cup grated Parmesan cheese
• 2 cups marinara sauce

Seasonings

• 1 tbsp olive oil
• 1 onion, diced
• 3 cloves garlic, minced
• Salt and pepper, to taste
• 1 tsp dried oregano
• 1 tsp dried basil
• 1/2 tsp red pepper flakes

Optional Toppings

• Fresh basil, chopped
• Grated Parmesan cheese

Instructions

1. Step 1: Preheat your oven to 375°F (190°C). Cook lasagna noodles according to package instructions. Drain and set aside.
2. Step 2: In a large skillet, heat olive oil over medium heat. Add onion and cook until softened. Add garlic and cook for another minute.
3. Step 3: Add mushrooms to the skillet and cook until they release their moisture and begin to brown. Season with salt, pepper, oregano, basil, and red pepper flakes.
4. Step 4: Stir in spinach and cook until wilted. Remove from heat and set aside.
5. Step 5: In a medium bowl, mix ricotta, 1/2 cup Parmesan, salt, and pepper.
6. Step 6: To assemble the lasagna, spread a thin layer of marinara sauce in the bottom of a 9×13-inch baking dish. Arrange a layer of lasagna noodles, followed by a layer of mushroom and spinach mixture, a layer of ricotta mixture, and a layer of mozzarella cheese. Repeat layers, ending with a layer of marinara sauce and the remaining mozzarella and Parmesan cheeses.
7. Step 7: Cover the baking dish with foil and bake for 25 minutes. Remove the foil and bake for an additional 10-15 minutes, or until the cheese is melted and bubbly, and the edges are golden.
8. Step 8: Let the lasagna rest for 10 minutes before serving. Top with fresh basil and additional Parmesan cheese, if desired.

Notes

• Chef tip: For a vegetarian version, omit the cheese or use a vegan alternative.
• Best substitution: You can substitute the mushrooms with spinach and bell peppers for a different flavor profile.
• Make-ahead: See storage section for make-ahead instructions.
• Scaling: This recipe can be easily doubled or halved to serve more or fewer people.
• Troubleshooting: If the lasagna is still cold in the center, cover it with foil and bake for an additional 10-15 minutes.

Storage

• Fridge: Store leftovers in an airtight container in the refrigerator for up to 5 days.
• Freezer: Freeze assembled lasagna, without toppings, for up to 3 months. Thaw overnight in the refrigerator before baking.
• Oven reheat: Reheat leftovers in a 350°F (175°C) oven for 15-20 minutes, or until heated through.
• Microwave reheat: Reheat individual portions in the microwave for 1-2 minutes, or until heated through.
• Make ahead: You can assemble this lasagna up to 24 hours ahead of time. See pro tip for instructions.

Nutrition Per Serving

• Calories: 420
• Protein: 22g
• Fat: 18g
• Carbs: 45g
• Fiber: 4g
• Sugar: 6g
• Sodium: 1200mg
• Cholesterol: 70mg
• Sat. Fat: 10g

Nutritional values are estimates only. Actual values may vary by brand and portion size.

Easy Mushroom Spinach Lasagna for a Cozy Dinner FAQs

A Warm Final Note

I can’t wait for you to try Easy Mushroom Spinach Lasagna for a Cozy Dinner and see how effortlessly it comes together. When you make it, pop back here and leave a rating or share how it turned out — I love hearing from you!