Easy Spinach Mushroom Bake

Category: Sophisticated Dinners Ready in 45 Minutes or Less

Vegetarian pasta loaded with mushrooms, spinach, and creamy sauce. Ready in an hour, serves 6, perfect for leftovers.
A woman in a white chef's coat smiles for the camera.
Created By Mia Laurent
Updated on Wed, 16 Apr 2025 00:02:15 GMT
Spinach pasta bake Pin
Spinach pasta bake | chefmiarecipes.com

This dreamy veggie mushroom spinach lasagna turns ordinary comfort food into a fancy meatless delight. Layering soft pasta with earthy mushrooms, leafy spinach, and silky white sauce creates a sophisticated yet easy dish that'll wow your dinner guests in no time.

I've tried so many veggie lasagna recipes, but this one always wins at our family table. The fresh veggies mixed with that creamy sauce make such a filling meal that nobody even asks where the meat is.

Essential Ingredients & Shopping Advice

  • Good mushrooms: Go for cremini or portobello for deeper flavor
  • Young spinach: Get the fresh stuff for better bite than the frozen kind
  • Regular flour: You'll need this for your creamy white sauce
  • Full-fat milk: Makes the creamiest sauce possible
  • Pasta sheets: Ready-to-use or regular both do the job

Step-By-Step Cooking Guide

Prep your veggies:
Cook mushrooms till golden brown, then toss in spinach and garlic until soft
Master the sauce:
Mix butter with flour, then slowly pour in warmed milk while stirring
Add flavors:
Sprinkle in nutmeg, salt, and pepper to boost taste
Build your layers:
Begin with thin sauce coating, then stack noodles, veggies, and cheese
Stack with care:
Make sure goodies are spread evenly across each layer
Bake it right:
Cover with foil for first 25 mins, then uncover to brown the top
Let it sit:
Wait 10-15 mins before cutting to keep slices neat
Creamy Spinach & Mushroom Lasagna Pin
Creamy Spinach & Mushroom Lasagna | chefmiarecipes.com

My nonna always told me to throw in a tiny bit of nutmeg to the white sauce - you can hardly taste it but it really makes the whole dish pop.

Prep Ahead Options

You can put everything together up to a day before, wrap it up and chill it. Just let it warm up on the counter before it goes in the oven.

Best Cheeses To Use

Mix fresh mozzarella with full-fat ricotta and aged Parmesan to get amazing flavor depth and that perfect gooey melt.

Getting Veggies Just Right

Don't crowd your mushrooms in the pan. Cook them in small batches so they brown nicely instead of steaming.

Perfecting Your Sauce

Pour warm milk bit by bit while stirring non-stop to keep your white sauce lump-free.

Pro Cooking Tricks

  • Add some fresh herbs between layers
  • Get mushrooms nice and brown before adding your spinach
  • Cool your lasagna before cutting for pretty slices
Creamy Spinach and Mushroom Lasagna Pin
Creamy Spinach and Mushroom Lasagna | chefmiarecipes.com

Even the biggest meat fans in my family can't resist this veggie lasagna. The mix of perfectly cooked veggies, smooth sauce, and gooey cheese makes a comfort food you won't forget anytime soon.

Common Recipe Questions

→ Can I prepare this dish before cooking?
Sure, put it together a day ahead and refrigerate. Bake cold, but add 10-15 extra minutes.
→ Can this pasta bake be frozen?
Yes, wrap tightly and freeze for 3 months max. Defrost it in the fridge overnight before heating.
→ What could replace the mushrooms?
Use zucchini, roasted bell peppers, or eggplant instead of mushrooms.
→ Do the noodles need pre-cooking?
Depends. No-boil ones go in uncooked, but regular noodles need pre-cooking first.
→ How can I fix lumpy béchamel sauce?
Keep whisking nonstop while slowly pouring in warm milk to stop lumps from showing up.

Spinach Mushroom Bake

This hearty vegetarian pasta features spinach, mushrooms, and a creamy sauce, all topped with gooey cheese.

Prep Time
20 minutes
Cooking Time
40 minutes
Total Duration
60 minutes
Created By: Mia Laurent

Recipe Category: Weeknight Elegance

Skill Level: Moderately Challenging

Recipe Cuisine: Italian

Recipe Yield: 6 Number of Servings

Dietary Categories: Vegetarian-Friendly

Ingredients You’ll Need

→ Veggie Mixture

01 Roughly 3 cups of chopped fresh spinach
02 Dash of salt and pepper to your taste
03 Slice up 2 cups of mushrooms
04 Three minced garlic cloves
05 2 tablespoons of olive oil for cooking

→ Creamy Sauce

06 3 tablespoons of butter
07 Milk that's warm - about 3 cups
08 A half-teaspoon of nutmeg powder
09 Salt and pepper to taste
10 Three tablespoons of all-purpose flour

→ Final Layers

11 Two cups of shredded mozzarella
12 A cup of ricotta cheese
13 9 lasagna noodles, cooked
14 Half a cup of grated Parmesan

Steps to Make It

Step 01

In a pan with heated olive oil, cook mushrooms for about 5 minutes till they're browned nicely. Toss in garlic and spinach till wilted gently. Sprinkle salt and pepper, then put it to the side.

Step 02

Get your butter melted in a pot, stir flour into it, and let it cook a bit. Gradually pour in the warm milk while whisking to avoid clumps. Once it thickens, mix in the nutmeg, plus some salt and pepper.

Step 03

Heat your oven to 375°F. Spread a layer of sauce over the dish base, add noodles, some veggies, ricotta, mozzarella, and more sauce. Repeat the layers three times.

Step 04

Pour sauce over the top and finish with Parmesan and mozzarella. Cover with foil and bake for 25 minutes, then without foil for another 15 minutes so it gets golden and bubbly.

Step 05

Let it rest about 10 minutes to settle before slicing in - it's worth it! Serve warm and gooey.

Extra Information

  1. Store leftovers in the fridge for up to 3 days
  2. Spice it up with chili flakes or add sautéed onion

Essential Tools

  • A 9x13-inch pan for baking
  • Large frying pan
  • A pot for sauce-making
  • Whisk for smooth sauces
  • Foil to cover the dish

Allergen Details

Review every item for allergen risks. Reach out to a healthcare expert for any concerns.
  • Has dairy (milk, cheese)
  • Gluten present (flour, noodles)
  • Eggs included (in the pasta)

Nutritional Details (Per Serving)

These figures are for general reference and shouldn’t replace expert medical guidance.
  • Caloric Content: 385
  • Fat Content: 18 grams
  • Carbohydrate Content: 42 grams
  • Protein Content: 15 grams