Easy Mushroom Spinach Lasagna for Cozy Weeknight Dinner

Easy Mushroom Spinach Lasagna is the ultimate comfort food, ready in just 45 minutes. After making this countless times, I’ve perfected the layers for maximum flavor. The crispy edges and creamy center will make your kitchen cozy and inviting. Try it with my Crispy Potato Fritters with Cheese for a complete meal. If you love recipes like this, you’ll also enjoy Crispy Potato Fritters with Cheese and Crispy Oven-Fried Feta Rolls with Spicy Honey Dip.

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

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

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

How to Make Easy Mushroom Spinach Lasagna for Cozy Weeknight Dinner

1. Cook the lasagna noodles: Follow package instructions, then drain and set aside.
2. Sauté the mushrooms: Heat olive oil in a large skillet over medium heat. Add mushrooms and cook until browned. Remove from skillet and set aside.
3. Cook the onions and garlic: In the same skillet, add onions and cook until softened. Add garlic and cook for an additional minute.
4. Add spinach: Stir in spinach and cook until wilted. Season with salt, pepper, oregano, and basil.
5. Mix ricotta and Parmesan: In a bowl, combine ricotta, Parmesan, salt, and pepper.
6. 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 mixture, a layer of ricotta mixture, and a sprinkle of mozzarella. Repeat layers, ending with a layer of noodles and the remaining mozzarella cheese.
7. Bake the lasagna: Preheat oven to 375°F (190°C). Cover the baking dish with foil and bake for 20 minutes. Remove foil and bake for an additional 10-15 minutes, or until cheese is melted and bubbly.

Storing & Reheating Easy Mushroom Spinach Lasagna for Cozy Weeknight Dinner

Short-Term Storage

Store in an airtight container in the fridge. Store leftovers in an airtight container in the refrigerator for up to 4 days. Make-ahead tip: You can assemble the lasagna up to a day ahead. Store in the refrigerator until ready to bake.

Freezing Easy Mushroom Spinach Lasagna for Cozy Weeknight Dinner

Freeze individual portions for up to 3 months. Thaw overnight before reheating.

How to Reheat Without Drying It Out

Oven: Reheat in a 350°F (175°C) oven for 15-20 minutes, or until heated through. Microwave: Reheat in the microwave for 2-3 minutes, or until heated through.

Recipe Notes

• Chef tip: For a creamier lasagna, you can mix 1 cup of ricotta into the marinara sauce before layering.
• Best substitution: Substitute the spinach with kale for a different flavor profile.
• Make-ahead: You can assemble the lasagna up to a day ahead. Store in the refrigerator until ready to bake.
• Scaling: This recipe can be easily doubled to serve a larger crowd.
• Troubleshooting: If the lasagna is browning too quickly, cover it with foil while baking.

Easy Mushroom Spinach Lasagna for Cozy Weeknight Dinner

⏱

Prep

15 mins

🍳

Cook

30 mins

⏳

Total

45 mins

🍽

Serves

6 servings

🥗

Diet

Vegetarian

Ingredients

Main Ingredients

• 12 lasagna noodles
• 2 tbsp olive oil
• 1 lb mushrooms, sliced
• 1 onion, diced
• 3 cloves garlic, minced
• 10 oz spinach, chopped
• 2 cups ricotta cheese
• 1 cup shredded mozzarella cheese
• 1/2 cup grated Parmesan cheese
• 2 cups marinara sauce

Seasonings

• Salt and pepper, to taste
• 1 tsp dried oregano
• 1 tsp dried basil

Optional Toppings

• Fresh basil, chopped
• Red pepper flakes

Instructions

1. Cook the lasagna noodles: Follow package instructions, then drain and set aside.
2. Sauté the mushrooms: Heat olive oil in a large skillet over medium heat. Add mushrooms and cook until browned. Remove from skillet and set aside.
3. Cook the onions and garlic: In the same skillet, add onions and cook until softened. Add garlic and cook for an additional minute.
4. Add spinach: Stir in spinach and cook until wilted. Season with salt, pepper, oregano, and basil.
5. Mix ricotta and Parmesan: In a bowl, combine ricotta, Parmesan, salt, and pepper.
6. 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 mixture, a layer of ricotta mixture, and a sprinkle of mozzarella. Repeat layers, ending with a layer of noodles and the remaining mozzarella cheese.
7. Bake the lasagna: Preheat oven to 375°F (190°C). Cover the baking dish with foil and bake for 20 minutes. Remove foil and bake for an additional 10-15 minutes, or until cheese is melted and bubbly.

Notes

• Chef tip: For a creamier lasagna, you can mix 1 cup of ricotta into the marinara sauce before layering.
• Best substitution: Substitute the spinach with kale for a different flavor profile.
• Make-ahead: You can assemble the lasagna up to a day ahead. Store in the refrigerator until ready to bake.
• Scaling: This recipe can be easily doubled to serve a larger crowd.
• Troubleshooting: If the lasagna is browning too quickly, cover it with foil while baking.

Storage

• Fridge: Store leftovers in an airtight container in the refrigerator for up to 4 days.
• Freezer: Freeze individual portions for up to 3 months. Thaw overnight before reheating.
• Oven reheat: Reheat in a 350°F (175°C) oven for 15-20 minutes, or until heated through.
• Microwave reheat: Reheat in the microwave for 2-3 minutes, or until heated through.
• Make ahead: You can assemble the lasagna up to a day ahead. Store in the refrigerator until ready to bake.

Nutrition Per Serving

• Calories: 420
• Protein: 22g
• Fat: 16g
• Carbs: 50g
• Fiber: 4g
• Sugar: 8g
• Sodium: 1200mg
• Cholesterol: 70mg
• Sat. Fat: 9g

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

Easy Mushroom Spinach Lasagna for Cozy Weeknight Dinner FAQs

A Warm Final Note

I can’t wait for you to try Easy Mushroom Spinach Lasagna for Cozy Weeknight 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!