Roasted Vegetable Lasagna White

A steaming, cheesy square of roasted vegetable lasagna, overflowing with roasted veggies and creamy white sauce. Pin it
A steaming, cheesy square of roasted vegetable lasagna, overflowing with roasted veggies and creamy white sauce. | picnicandpan.com

This savory Italian main dish brings together tender roasted vegetables with a smooth, flavorful white sauce. Layers of no-boil noodles alternate with seasoned vegetables, creamy béchamel, and a blend of mozzarella, parmesan, and ricotta cheeses. Roasting the vegetables first enhances their natural sweetness and depth, while the béchamel adds a rich, velvety texture. After baking until golden and bubbling, the dish rests briefly before serving to allow flavors to meld. Perfect for a vegetarian meal full of comforting layers and traditional Italian flair.

I threw this together on a rainy Sunday when the farmers market haul was too good to pass up. The kitchen smelled like a trattoria within minutes. It's become my go-to when I want something impressive without the fuss of meat.

My neighbor knocked on the door mid-assembly, flour on my hands, and ended up staying for dinner. We ate straight from the pan with crusty bread. She still asks me to make it every time she visits.

Ingredients

  • Eggplant: Roasting transforms it into silky, almost meaty bites that anchor each layer.
  • Zucchini and bell peppers: They caramelize beautifully and add pops of color and sweetness.
  • Cremini mushrooms: Their earthy depth balances the richness of the béchamel.
  • Olive oil, oregano, thyme: This trio coats the vegetables in Mediterranean warmth.
  • No-boil lasagna noodles: They soak up sauce perfectly and save you a pot of boiling water.
  • Baby spinach: Wilts into the layers, adding a fresh, iron-rich contrast.
  • Butter and flour: The roux base that makes béchamel velvety and stable.
  • Whole milk: Warm it first so the sauce stays smooth and lump-free.
  • Nutmeg: Just a whisper elevates the entire white sauce with subtle spice.
  • Mozzarella and parmesan: Mozzarella melts into gooey strings, parmesan brings sharp, nutty notes.
  • Ricotta cheese: Creamy pockets that lighten the dish and add body.

Instructions

Roast the vegetables:
Preheat to 220°C (425°F) and toss eggplant, zucchini, peppers, and mushrooms with olive oil, herbs, salt, and pepper. Spread them out so they roast, not steam, turning once halfway through until golden and tender.
Make the béchamel:
Melt butter over medium heat, whisk in flour, and cook for two minutes to remove the raw taste. Gradually add warm milk, whisking constantly, then simmer gently until thick enough to coat the back of a spoon.
Assemble the lasagna:
Spread a thin layer of béchamel in your baking dish, then layer noodles, roasted vegetables, spinach, ricotta dollops, cheeses, and more béchamel. Repeat twice, finishing with noodles, sauce, and a generous blanket of mozzarella and parmesan.
Bake and rest:
Cover with foil and bake at 180°C (350°F) for 25 minutes, then uncover and bake until the top is golden and bubbling. Let it rest for 10 minutes so the layers set and slicing is clean.
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The first time I served this, my brother-in-law (a dedicated carnivore) went back for thirds. He didn't notice there was no meat until I told him. That's when I knew this recipe had real power.

Make It Your Own

I have stirred in roasted butternut squash when autumn hits and the sweetness plays beautifully against the nutmeg. You can swap zucchini for thinly sliced fennel or add a handful of sun-dried tomatoes for tang. If you want more protein, a layer of white beans works surprisingly well.

Storing and Reheating

This lasagna keeps for up to four days in the fridge, covered tightly. Reheat individual portions in the microwave or the whole dish in a low oven with foil on top. It also freezes beautifully for up to three months, just thaw overnight before baking.

Pairing and Serving

I serve this with a simple arugula salad dressed in lemon and olive oil, maybe some garlic bread if I am feeling indulgent. A crisp Pinot Grigio or Verdicchio cuts through the richness perfectly.

  • Let guests see the layers when you slice it, they are part of the charm.
  • A sprinkle of fresh basil on top adds color and aroma.
  • Serve it family style straight from the baking dish for maximum coziness.
Golden brown and bubbling, this roasted vegetable lasagna features layers of flavorful roasted vegetables and melted cheese. Pin it
Golden brown and bubbling, this roasted vegetable lasagna features layers of flavorful roasted vegetables and melted cheese. | picnicandpan.com

This lasagna has turned into my love language for vegetarians and skeptics alike. I hope it fills your kitchen with the same warmth it brought to mine.

Recipe FAQ

Eggplant, zucchini, bell peppers, and cremini mushrooms roast well, becoming tender and flavorful. Their natural sweetness intensifies with roasting.

The creamy béchamel is made by melting butter, whisking in flour, then gradually adding warm milk and seasoning with nutmeg, salt, and white pepper. It’s cooked until thickened.

Yes, roasting the vegetables ahead of time allows flavors to develop and makes assembly quicker before baking.

No-boil noodles simplify preparation, but pre-cooked or gluten-free noodles can also be used depending on dietary needs.

Baking covered initially traps moisture, then uncovered baking browns the cheese and béchamel for a crisp, appetizing finish.

Roasted Vegetable Lasagna White

Layers of roasted vegetables, creamy béchamel, and melted cheese create a flavorful Italian main dish.

Prep 30m
Cook 60m
Total 90m
Servings 6
Difficulty Medium

Ingredients

Roasted Vegetables

  • 1 medium eggplant, diced
  • 1 medium zucchini, diced
  • 1 red bell pepper, diced
  • 1 yellow bell pepper, diced
  • 7 oz cremini mushrooms, sliced
  • 2 tbsp olive oil
  • 1 tsp dried oregano
  • 1 tsp dried thyme
  • Salt and pepper, to taste

Lasagna Layers

  • 9 no-boil lasagna noodles (or pre-cooked regular noodles)
  • 5 oz baby spinach

White Sauce (Béchamel)

  • 4 tbsp unsalted butter
  • 4 tbsp all-purpose flour
  • 3 1/3 cups whole milk, warmed
  • 1/2 tsp ground nutmeg
  • Salt and white pepper, to taste

Cheese

  • 7 oz mozzarella cheese, shredded
  • 3.5 oz parmesan cheese, grated
  • 9 oz ricotta cheese

Instructions

1
Preheat Oven and Prepare Vegetables: Preheat oven to 425°F. Line a large baking tray with parchment paper.
2
Roast Vegetables: Toss eggplant, zucchini, bell peppers, and mushrooms with olive oil, oregano, thyme, salt, and pepper. Arrange on tray and roast for 25 minutes, stirring once halfway, until golden and tender. Set aside.
3
Lower Oven Temperature: Reduce oven temperature to 350°F.
4
Prepare Béchamel Sauce: Melt butter in a saucepan over medium heat. Whisk in flour and cook for 2 minutes. Gradually whisk in warm milk until smooth. Simmer gently for 5-7 minutes, stirring constantly, until thickened. Season with nutmeg, salt, and white pepper.
5
Assemble First Layer: Spread a thin layer of béchamel in a 9x13 inch baking dish. Layer 3 lasagna noodles over the sauce, then half the roasted vegetables, a handful of spinach, dollops of ricotta, one third each of mozzarella and parmesan, and a generous layer of béchamel.
6
Assemble Second Layer: Repeat with 3 noodles, remaining vegetables, spinach, ricotta, another third of the mozzarella and parmesan, followed by more béchamel.
7
Assemble Final Layer: Top with the last 3 noodles, remaining béchamel, and the rest of the mozzarella and parmesan cheeses.
8
Bake Covered: Cover with foil and bake for 25 minutes.
9
Bake Uncovered: Remove foil and continue baking for 15 to 20 minutes until the top is golden and bubbling.
10
Rest Before Serving: Allow lasagna to rest for 10 minutes before slicing and serving.
Additional Information

Equipment Needed

  • Large baking tray
  • Parchment paper
  • Saucepan
  • Whisk
  • 9x13 inch baking dish
  • Aluminum foil

Nutrition (Per Serving)

Calories 480
Protein 23g
Carbs 48g
Fat 22g

Allergy Information

  • Contains milk (butter, cheese, ricotta) and wheat (flour, noodles). Verify labels if sensitive to allergens.
Tessa Monroe

Easy recipes, quick meals, and wholesome inspiration from a fellow home cook.