Spinach Lasagna With Mushroom Ragu Recipe

Name: Spinach Lasagna With Mushroom Ragu Recipe
Prep time: 45 min
Cook time: 1 h
Total time: 45 min
Yield: 8
Cuisine: Italian
Ingredients: 1 lb lasagna noodles (no-boil kind); 2 tbsp olive oil; 1 large onion, chopped; 4 cloves garlic, minced; 1.5 lbs mixed mushrooms (cremini, shiitake, etc.), sliced; 1 (28 oz) can crushed tomatoes; 1 tbsp tomato paste; 1 tsp dried oregano; Salt and pepper to taste; 2 (10 oz) packages frozen spinach, thawed and squeezed dry; 16 oz ricotta cheese; 1 large egg; 1/4 tsp ground nutmeg; 3 cups shredded mozzarella cheese; 1 cup grated Parmesan cheese

I’ll never forget the first time I tried to make this Spinach Lasagna With Mushroom Ragu Recipe. I was so proud of myself for making a “fancy” dinner for a date. I used way too much nutmeg in the spinach layer and the whole thing tasted like Christmas potpourri. We ended up ordering pizza and laughing about it, and now it’s our go-to story for kitchen disasters. But I kept trying, and now this lasagna is my absolute favorite comfort food to make on a lazy Sunday. It feels like a hug in a baking dish.

Recipe Card

Recipe Title	Spinach Lasagna With Mushroom Ragu Recipe
Servings	8
Prep Time	45 minutes
Cooking Time	1 hour
Calories	approx. 480

Ingredients

1 lb lasagna noodles (the no-boil kind)
2 tbsp olive oil
1 large onion, chopped
4 cloves garlic, minced
1.5 lbs mixed mushrooms (cremini, shiitake, etc.), sliced
1 (28 oz) can crushed tomatoes
1 tbsp tomato paste
1 tsp dried oregano
Salt and pepper to taste
2 (10 oz) packages frozen spinach, thawed and squeezed dry
16 oz ricotta cheese
1 large egg
1/4 tsp ground nutmeg (seriously, just a pinch!)
3 cups shredded mozzarella cheese
1 cup grated Parmesan cheese

That nutmeg is the one that got me. I got overzealous and dumped in a full teaspoon once. It was inedible. Now I just do a tiny pinch, it’s just supposed to be a background note. And squeezing the spinach dry is non-negotiable. I didn’t once and my lasagna was a soupy, green puddle. Not a good look.

Directions

Preheat your oven to 375°F (190°C).
Heat olive oil in a big pot or Dutch oven over medium heat.
Add the onion and cook until soft, about 5 minutes.
Add the garlic and cook for another minute until fragrant.
Add all the mushrooms. Cook them down until they’ve released their water and started to brown, about 10-15 minutes.
Stir in the tomato paste and cook for a minute.
Pour in the crushed tomatoes and add the oregano, salt, and pepper. Let it simmer for about 15-20 minutes to thicken up. This is your ragu.
In a bowl, mix the squeezed-dry spinach, ricotta, egg, that tiny pinch of nutmeg, and a little salt and pepper.
Now, assemble! In a 9×13 inch baking dish, spread a thin layer of the mushroom ragu on the bottom.
Add a layer of noodles.
Spread half of the spinach-ricotta mixture over the noodles.
Sprinkle with a third of the mozzarella and a little Parmesan.
Spoon a third of the remaining ragu over the cheese.
Repeat the layers: noodles, the rest of the spinach mix, cheese, ragu.
Top with a final layer of noodles, the last of the ragu, and the rest of the mozzarella and Parmesan.
Cover tightly with foil and bake for 25 minutes.
Remove the foil and bake for another 15-20 minutes until the cheese is golden and bubbly.
Let it sit for at least 15 minutes before you even think about cutting into it. This is the hardest part!

The biggest lesson I learned the hard way is the waiting. I was so hungry one time I cut right into it and it just slid apart into a cheesy landslide. It was delicious but looked like a crime scene. Letting it rest lets everything set up so you get those perfect, clean squares.

This Spinach Lasagna With Mushroom Ragu Recipe is my ultimate make-ahead meal. I once made a double batch for a friend who had a baby, and it froze like a dream. The leftovers might even be better than the first night! It’s become a real family favorite, even with my nephew who claims to hate mushrooms. He doesn’t even notice they’re in there, he just thinks it’s a really meaty, hearty sauce.

If I were to change one thing next time, I might try adding a layer of roasted butternut squash for a little sweetness. I’m always tweaking it. That’s the beauty of a recipe like this, it’s so forgiving. It’s the perfect easy dinner that feels anything but easy.

Nutrition Info (per serving)

Calories	Carbs	Fat	Protein
480	45g	22g	28g

I know it looks a bit heavy, but it’s packed with veggies! You can definitely make it lighter by using part-skim ricotta and mozzarella. I’ve done that before and it still tastes amazing. For my gluten-free friends, just swap in your favorite GF noodles. They work just fine.

Ingredient Swaps

Ingredient	Substitution
Mushrooms	Zucchini or eggplant, diced small
Ricotta	Cottage cheese (blended smooth)
Spinach	Swiss chard or kale
Mozzarella	Provolone or Fontina

I used cottage cheese instead of ricotta once when I was in a pinch. I made the mistake of not blending it first and the texture was… curdy. Not great. Blend it if you go that route! The zucchini swap works well, but you gotta salt it and drain the water out, just like the spinach.

Tips

Don’t skip squeezing the spinach. I mean it. Get all that water out.
Let the lasagna rest after baking. Walk away. Set a timer. It’s crucial.
Use a mix of mushrooms for the best, deepest flavor.
If your no-boil noodles look super stiff, you can dip them in warm water for a sec before layering.

That last tip I learned after one pan where the corner noodles were still a little too al dente. I was so mad at myself for not checking. A quick dip fixes everything and you don’t end up with crunchy bits.

FAQ

Can I make this ahead of time?
Absolutely! Assemble the whole thing, cover it tightly, and stick it in the fridge for up to a day before baking. You might need to add a few extra minutes to the baking time since it’ll be cold from the fridge.

Why is my lasagna so watery?
Oh man, I’ve been there. It’s almost always because the spinach wasn’t dry enough or the mushrooms weren’t cooked down long enough to release all their moisture. Really take your time with those steps.

Can I freeze it?
Yes, and it freezes beautifully. Bake it completely, let it cool completely, then wrap individual portions or the whole thing tightly in foil and freeze. To reheat, thaw in the fridge overnight and bake at 350°F until heated through.

That’s everything I know about making Spinach Lasagna With Mushroom Ragu Recipe! Hope you give it a try, and if you mess it up, you’re in good company—I do it all the time.