Rich Vegetarian Lasagna

Featured in Meatless meals that satisfy.

Vegetarian lasagna packed with cheese, sautéed mushrooms, spinach, and a rich white sauce. Great for weeknight meals.
alicia in the kitchen
Updated on Fri, 02 May 2025 17:40:47 GMT
Mushroom Spinach White Sauce Lasagna Pin it
Mushroom Spinach White Sauce Lasagna | tasteofsavor.com

This velvety mushroom and spinach lasagna turns simple veggies into a stunning meat-free dish. Every bite combines earthy mushrooms, wilted spinach, and a trio of complementary cheeses, all wrapped in a smooth homemade white sauce that'll make your taste buds dance.

I spent years making meat-based lasagna until I stumbled upon this veggie version at a cooking workshop in Italy. The teacher showed me that getting the texture just right means cooking mushrooms properly until they've released all their water. These days my family actually likes this one better than the meat version.

Key Ingredients

  • Mushrooms: Pick plump, fresh cremini for richer taste
  • Spinach: Go with fresh leaves for better bite than frozen
  • Lasagna Noodles: Regular or ready-to-bake options work fine
  • Ricotta: Whole-milk type delivers the creamiest outcome
  • White Sauce: Begins with premium butter
  • Three Cheeses: Each brings its own special taste and feel

Step-by-Step Guide

Step 1:
Get everything ready before you start building - having all ingredients prepped makes everything go smoother.
Step 2:
Brown mushrooms in small batches so they don't steam - you want them nice and golden.
Step 3:
Build your white sauce slowly, stirring all the time for a silky finish.
Step 4:
Cool the sauce a bit before you start layering to keep cheese from melting too soon.
Step 5:
Spread each layer right to the edges of the dish.
Step 6:
Lightly push down on the noodles to squeeze out air bubbles.
Step 7:
Spray the foil with cooking oil so it won't stick to the cheese.
Step 8:
Keep an eye on it while browning - you want golden spots but not burnt patches.
Step 9:
Let it sit long enough for clean cutting.
Step 10:
Enjoy it slightly warm for the best flavor experience.
Spinach and Mushroom White Lasagna Recipe Pin it
Spinach and Mushroom White Lasagna Recipe | tasteofsavor.com

My grandma from Italy always told me a good lasagna needs time to "collect its thoughts." She taught me to always make more white sauce than I think I'll need - better to have extra than not enough.

Building Perfect Layers

  • Begin with a thin sauce coating on the bottom
  • Push everything all the way to the edges
  • Make layers the same thickness throughout
  • Top it off with plenty of cheese
  • Softly press down to get rid of air pockets

When I showed my daughter how to make this dish, we set up our own little assembly line. She calls our process "creating the perfect mouthful" as we carefully stack each ingredient.

Prep-Ahead Tricks

  • Put it together up to a day before baking
  • Bring ingredients to room temp before cooking
  • Wrap it up snugly with foil
  • Bake it 10 minutes longer if it's been in the fridge
  • Save some extra sauce for warming leftovers

What To Serve With It

  • Fresh garden salad
  • Buttery garlic bread
  • Oven-baked vegetables
  • Something light to drink
  • Sprinkle of fresh herbs on top
Spinach and Mushroom White Lasagna Recipe Pin it
Spinach and Mushroom White Lasagna Recipe | tasteofsavor.com

Keeping And Warming Up

  • Let it cool all the way before putting in the fridge
  • Slice into smaller pieces for easier warming
  • Spoon on extra white sauce when heating up
  • Keeps in the freezer for 3 months max
  • Move to fridge overnight to thaw

This veggie lasagna has turned into our family's favorite comfort food. It shows how dishes without meat can be just as filling and fancy as the classics. The mix of three cheeses, hearty mushrooms, and soft spinach creates flavor layers that give you the perfect balance of homey goodness and special-occasion deliciousness in every bite.

Frequently Asked Questions

→ Which mushrooms taste best in this dish?
Cremini or button mushrooms, or a mix, work well. Cremini adds a deeper flavor.
→ Can I prepare it ahead?
Yes, assemble it a day early and refrigerate before baking.
→ How do I avoid lumpy white sauce?
Keep whisking as you slowly add warm milk, stirring until it thickens.
→ Are no-boil lasagna sheets okay?
Yes, just use a thinner sauce since these absorb extra liquid.
→ How long does it stay fresh?
Refrigerate for up to 4 days or freeze for up to 3 months in an airtight container.

Creamy Vegetarian Lasagna

A hearty veggie lasagna with spinach and mushrooms baked in a creamy sauce, topped with gooey cheese.

Prep Time
40 Minutes
Cook Time
45 Minutes
Total Time
85 Minutes
By: Alicia

Category: Vegetarian

Difficulty: Intermediate

Cuisine: Italian

Yield: 8 Servings

Dietary: Vegetarian

Ingredients

→ Base Layer

01 12 lasagna sheets, soft and pliable, regular or gluten-free, depending on your preference

→ Rich Veggie Filling

02 2 tablespoons of high-quality olive oil
03 1 small onion, finely diced into small pieces
04 3 garlic cloves, minced until smooth
05 16 ounces of fresh mushrooms, a mix of button and cremini, sliced just right
06 10 ounces of fresh spinach (or a thawed package of frozen spinach, carefully drained)

→ Creamy White Sauce

07 4 tablespoons of smooth unsalted butter
08 1/4 cup of all-purpose flour (swap with a gluten-free flour blend if needed)
09 3 cups of milk for a rich, silky finish
10 1/2 teaspoon of warm, earthy nutmeg
11 A pinch of sea salt and freshly ground pepper to enhance the flavors

→ Cheese Mixture

12 1 1/2 cups of creamy ricotta cheese
13 1 large egg, beaten until smooth
14 2 cups of shredded mozzarella cheese
15 1/2 cup of grated Parmesan

Instructions

Step 01

Fill a large pot with water, bring it to a boil, and toss in some salt. Drop in your noodles and cook until just soft with a slight firmness. Drain the noodles gently and lay them flat so they don't stick together.

Step 02

Heat up the olive oil in a decent-sized skillet. Stir in the diced onion and let it cook for a few minutes until it's soft and almost clear. Add the garlic and let it sizzle for about a minute to release its scent. Next, toss in the mushrooms and give them time to cook down until golden brown, around 8 minutes. Finally, add the spinach and let it wilt completely. Season with salt and pepper to your liking.

Step 03

Melt the butter in a medium pan over medium heat. Sprinkle over the flour, constantly whisking for about 1-2 minutes, until it forms a light golden paste. Gradually mix in the milk while stirring continuously to avoid lumps. Keep stirring until the sauce thickens, which should take about 5-7 minutes. Add the nutmeg, salt, and pepper for extra taste.

Step 04

Grab a bowl, and combine the ricotta, the egg, and 1/2 cup of mozzarella. Put in a pinch of salt and stir it all together until it's smooth.

Step 05

Turn your oven on to 375°F (190°C) and grease a 9×13-inch baking dish. Spread a bit of the white sauce on the bottom, then layer some noodles on top. Add 1/3 of the ricotta mix, followed by half the spinach-mushroom filling. Keep layering noodles, sauce, and fillings until you've used it all up, ending with noodles and the last of the white sauce, topped with Parmesan and mozzarella.

Step 06

Cover the dish with foil and pop it in the oven for about 25 minutes. Remove the foil and let it bake for 15-20 minutes more, until the cheese on top is golden and the edges are bubbling. Wait 10 minutes before cutting and serving—but it'll be worth the wait!

Notes

  1. You can assemble everything a day in advance and bake it fresh—just store it in the fridge until ready.
  2. Leftovers can be kept in a sealed container in the fridge for up to five days.
  3. Try swapping the mushrooms for other varieties to create unique flavor combinations.

Tools You'll Need

  • A large pot for boiling noodles
  • A big skillet for cooking veggies
  • A saucepan for preparing the sauce
  • A 9×13-inch pan for baking everything together
  • A whisk and a wooden spoon for mixing
  • Aluminum foil to cover the dish

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Includes dairy ingredients like milk, ricotta, mozzarella, and Parmesan
  • Contains eggs
  • Contains wheat unless you're using gluten-free options

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 385
  • Total Fat: 18 g
  • Total Carbohydrate: 32 g
  • Protein: 24 g