Easy Mushroom Spinach Lasagna for a Cozy Dinner

Easy Mushroom Spinach Lasagna is the ultimate comfort food for a cozy dinner. After making this many times, I’ve discovered the trick to perfectly creamy layers every time. The rich, earthy flavors of mushrooms and spinach make this dish irresistible. Keep reading for my best tips or jump to the recipe card. If you love recipes like this, you’ll also enjoy Easy Crockpot Lasagna Recipe for Simple Weeknight Dinners and Easy Veggie Scrambled Eggs on Toast for Quick Breakfast.

Why This Easy Mushroom Spinach Lasagna for a Cozy Dinner Is Pure Comfort
- Creamy, comforting layers of spinach, mushrooms, and cheese.
- Easy to make with simple ingredients.
- Perfect for meal prepping and freezes well.
- Better than takeout and family-approved.
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.
- 12 lasagna noodles
- 16 oz mushrooms
- 10 oz spinach
- 15 oz ricotta
- 8 oz mozzarella
- 1/2 cup parmesan
- 1 onion
- 3 cloves garlic
- 1 can (28 oz) crushed tomatoes
- Salt
- Pepper
- Italian seasoning
- Red pepper flakes
- Olive oil
- Garlic powder
- Onion powder
- Optional: Fresh basil
- Optional: Grated parmesan
- Optional: Red pepper flakes

📝 Ingredient Notes
- Lasagna noodles: No-boil noodles can be used.
- Mozzarella: Part-skim mozzarella can be used for a lighter version.
đź›’ Tools & Equipment I Recommend
- High-quality lasagna pan — Ensures even cooking and easy cleanup. → See on Amazon
- Immersion blender — Makes blending the sauce easy and mess-free. → See on Amazon

How to Make Easy Mushroom Spinach Lasagna for a Cozy Dinner
- Prepare the sauce: Sauté onions, garlic, and mushrooms. Add crushed tomatoes, salt, pepper, and Italian seasoning. Simmer for 15 minutes.
- Prepare the cheese mixture: Mix ricotta, mozzarella, parmesan, salt, pepper, garlic powder, and onion powder.
- Assemble the lasagna: Spread a thin layer of sauce in the bottom of the pan. Layer lasagna noodles, cheese mixture, spinach, and sauce. Repeat layers, ending with sauce and cheese.
- Bake the lasagna: Cover the pan with foil and bake at 375°F (190°C) for 25 minutes. Remove foil and bake for another 15-20 minutes, until bubbly and golden.
- Rest and serve: Let the lasagna rest for 10-15 minutes before serving. Top with fresh basil and red pepper flakes if desired.
Cook's Tips for Perfect Easy Mushroom Spinach Lasagna for a Cozy Dinner
- Common mistake and fix: Don't overcook the lasagna. It will continue to cook in the hot pan after you remove it from the oven. If it's still not set, cover it loosely with foil and bake for another 5-10 minutes.
- Pro tip: For a lighter version, use part-skim mozzarella and mix some Greek yogurt into the cheese mixture.
- Pro tip: Make-ahead tip: Assemble the lasagna, cover it tightly with plastic wrap, and refrigerate for up to 24 hours before baking.
- Pro tip: Freeze tip: Assemble the lasagna, cover it tightly with plastic wrap, then foil. Freeze for up to 3 months. Thaw overnight in the fridge before baking.
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 fridge for up to 5 days. Make-ahead tip: Assemble the lasagna, cover it tightly with plastic wrap, and refrigerate for up to 24 hours before baking.
Freezing Easy Mushroom Spinach Lasagna for a Cozy Dinner
Freeze assembled lasagna for up to 3 months. Thaw overnight in the fridge before baking.
How to Reheat Without Drying It Out
Oven: Reheat leftovers in the oven at 350°F (175°C) for 15-20 minutes, until heated through. Microwave: Reheat leftovers in the microwave for 2-3 minutes, until heated through. Stir halfway through.
Recipe Notes
- Chef tip: For a richer sauce, add a tablespoon of butter to the pan when sautéing the onions and garlic.
- Best substitution: Substitute the spinach with kale or Swiss chard for a different flavor profile.
- Make-ahead: Assemble the lasagna up to 24 hours ahead. Refrigerate until ready to bake.
- Scaling: This recipe can be doubled or halved to serve more or fewer people.
- Troubleshooting: If the lasagna is still not set after baking, cover it loosely with foil and bake for another 5-10 minutes.
Want to level up this recipe?
High-quality lasagna pan — Ensures even cooking and easy cleanup. → Check price on Amazon
Easy Mushroom Spinach Lasagna for a Cozy Dinner

Ingredients
Main Ingredients
- 12 lasagna noodles
- 16 oz mushrooms
- 10 oz spinach
- 15 oz ricotta
- 8 oz mozzarella
- 1/2 cup parmesan
- 1 onion
- 3 cloves garlic
- 1 can (28 oz) crushed tomatoes
Seasonings
- Salt
- Pepper
- Italian seasoning
- Red pepper flakes
- Olive oil
- Garlic powder
- Onion powder
Optional Toppings
- Fresh basil
- Grated parmesan
- Red pepper flakes
Instructions
- Prepare the sauce: Sauté onions, garlic, and mushrooms. Add crushed tomatoes, salt, pepper, and Italian seasoning. Simmer for 15 minutes.
- Prepare the cheese mixture: Mix ricotta, mozzarella, parmesan, salt, pepper, garlic powder, and onion powder.
- Assemble the lasagna: Spread a thin layer of sauce in the bottom of the pan. Layer lasagna noodles, cheese mixture, spinach, and sauce. Repeat layers, ending with sauce and cheese.
- Bake the lasagna: Cover the pan with foil and bake at 375°F (190°C) for 25 minutes. Remove foil and bake for another 15-20 minutes, until bubbly and golden.
- Rest and serve: Let the lasagna rest for 10-15 minutes before serving. Top with fresh basil and red pepper flakes if desired.
Notes
- Chef tip: For a richer sauce, add a tablespoon of butter to the pan when sautéing the onions and garlic.
- Best substitution: Substitute the spinach with kale or Swiss chard for a different flavor profile.
- Make-ahead: Assemble the lasagna up to 24 hours ahead. Refrigerate until ready to bake.
- Scaling: This recipe can be doubled or halved to serve more or fewer people.
- Troubleshooting: If the lasagna is still not set after baking, cover it loosely with foil and bake for another 5-10 minutes.
Storage
- Fridge: Store leftovers in an airtight container in the fridge for up to 5 days.
- Freezer: Freeze assembled lasagna for up to 3 months. Thaw overnight in the fridge before baking.
- Oven reheat: Reheat leftovers in the oven at 350°F (175°C) for 15-20 minutes, until heated through.
- Microwave reheat: Reheat leftovers in the microwave for 2-3 minutes, until heated through. Stir halfway through.
- Make ahead: Assemble the lasagna, cover it tightly with plastic wrap, and refrigerate for up to 24 hours before baking.
Nutrition Per Serving
- Calories: 450
- Protein: 22g
- Fat: 20g
- Carbs: 45g
- Fiber: 3g
- Sugar: 6g
- Sodium: 900mg
- Cholesterol: 70mg
- Sat. Fat: 12g
Nutritional values are estimates only. Actual values may vary by brand and portion size.
Easy Mushroom Spinach Lasagna for a Cozy Dinner FAQs
Yes, you can assemble the lasagna up to 24 hours ahead. Refrigerate until ready to bake.
Overcooking the lasagna can cause it to become dry. Make sure to remove it from the oven when the cheese is bubbly and golden.
Yes, you can freeze assembled lasagna for up to 3 months. Thaw overnight in the fridge before baking.
No, lasagna is not suitable for cooking in the air fryer. It requires even, gentle heat to cook through.
Kale or Swiss chard can be used as a substitute for spinach in this recipe.
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!






