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Home » Recipes » Casserole

Roasted Vegetable Lasagna

January 9, 2017 Updated June 8, 2021 by Lisa Goldfinger 7 Comments This post may contain affiliate links

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Pinterest Pin: close up looking down into a pan of vegetarian lasagna, with a sprig of basil on top for garnish.

This Roasted Vegetable Lasagna is the vegetarian version of classic lasagna. You won't miss the meat in this scrumptious casserole, packed with roasted carrots, bell peppers, onions and broccoli, and layered with thick rich tomato sauce and three cheeses.

Here's a delicious vegetarian version of classic Italian lasagna: Roasted Vegetable Lasagna. You won't miss the meat in this scrumptious casserole, packed with roasted carrots, bell peppers, onions and broccoli, and layered with thick rich tomato sauce and three cheeses.

I'm a huge fan of meaty lasagna but it's also great to have a vegetarian lasagna recipe in the repertoire, one with maximum veggies, and maximum deliciousness.

Are there any foods you love so much that you eat them until your stomach hurts and you can barely breathe? Lasagna is that for me. It's got to be great lasagna - the kind with an excellent tomato sauce and high quality ricotta, mozzarella and parmesan. Once the cheeses melt into the sauce and meld with tender noodles and whatever meats or vegetables are layered in, there's nothing more comforting, delicious, or irresistible.

2 red bell peppers, 3 yellow onions, 1 bunch of broccoli and 10 carrots on a wooden cutting board.

How to make Roasted Vegetable Lasagna:

Roasting is one of the best things you can do to vegetables to make them shine. When carrots, onions and red peppers are tossed with a little olive oil and salt, and roasted in the oven for a half hour or so, they soften, sweeten and caramelize around the edges, and they're absolutely delicious in lasagna.

  1. Toss onions, carrots and red bell peppers with oil and salt, and roast the vegetables in the oven for 40 minutes.
  2.  While the vegetables are roasting, make the sauce. Sauté garlic and red pepper flakes in olive oil for a minute or so and pour in canned plum tomatoes, tomato paste, dried basil and salt. Simmer sauce for 30 minutes and then puree with an immersion blender or in a food processor or blender. Add shaved broccoli and roasted veggies to the sauce and stir through.
  3. While the sauce simmers, cook the lasagna noodles. Boil them in salted water, drain them in a colander, run cool water over them, lay them out on a sheet pan.
  4. Assemble and Bake the Lasagna: Arrange 3 layers in a casserole dish: noodles, sauce, cheese, noodles, sauce, cheese, noodles, sauce, cheese. Cover the casserole with foil and bake for 45 minutes, until the sauce is bubbly and the cheese is melted.
  5. Let the lasagna rest for 15-20 minutes. Slice and serve. 

veggie-lasagna-veggies-web

Special Veggie-Packed Tomato Sauce

Shaved broccoli adds "meatiness" to vegetarian tomato sauce.  Use a sharp knife to thinly slice the broccoli crowns so they end up as broccoli crumbles. I use this technique often when making a vegetarian tomato sauce, and I just love it!overhead shot of a sauce pot filled with sauce and half of it is covered with shaved broccoli

After the sauce is ready, stir the shaved broccoli in and assemble the lasagna. Once it's baked, the broccoli will be perfectly cooked and give the sauce a great, meaty texture. Plus, you get the healthy benefits of adding a superfood to your sauce, infusing your roasted vegetable lasagna with extra protein, fiber and vitamins.

overhead view of a silver sauce pot filled with sauce for roasted vegetable lasagna

When I make lasagna I prefer the old fashioned noodles that you boil. It's an old habit and does require some extra work. Feel free to use no-boil noodles if you prefer. Assemble the lasagna by layering noodles, sauce, cheeses....

a white casserole dish with lasagna noodles lined up and a large spoon heaped with sauce about to be poured on top

Noodle, sauce, cheeses...A hand sprinkling mozzarella cheese onto a layer of sauce, assembling a lasagna in a white casserole dish

Cover the casserole with a double layer of foil and bake for 40 minutes.

Roasted vegetable lasagna in a white rectangular casserole dish shown from above before it's been baked

Uncover and bake 15-20 minutes longer until the sauce is bubbling and the cheeses are melted.Here's a delicious vegetarian version of classic Italian lasagna: Roasted Vegetable Lasagna. You won't miss the meat in this scrumptious casserole, packed with roasted carrots, bell peppers, onions and broccoli, and layered with thick rich tomato sauce and three cheeses.

Other Italian recipe to try:

  • No Fry Eggplant Parmesan
    A healthier and totally delicious recipe for eggplant parm. The eggplant rounds are breaded and baked, and layered with thick rich tomato sauce and cheese, and topped with spinach.
  • No Noodle Eggplant Lasagna
    This gluten-free vegetarian casserole is a cross between eggplant parm and lasagna but it's way healthier and so delicious!
  • Eggplant parmesan stacks
    A festive, architectural redesign of classic comforting eggplant parmesan, only healthier because the eggplant is baked.
  • Chicken Parmesan
    Boneless chicken cutlets, coated with crisp breadcrumbs, covered with velvety rich tomato sauce and melted cheese.

Here's a delicious vegetarian version of classic Italian lasagna: Roasted Vegetable Lasagna. You won't miss the meat in this scrumptious casserole, packed with roasted carrots, bell peppers, onions and broccoli, and layered with thick rich tomato sauce and three cheeses.

Here's the roasted vegetable lasagna recipe. If you make this I hope you'll come back to leave a star rating and a comment. I'd love to know how what you think! 

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Here's a delicious vegetarian version of classic Italian lasagna: Roasted Vegetable Lasagna. You won't miss the meat in this scrumptious casserole, packed with roasted carrots, bell peppers, onions and broccoli, and layered with thick rich tomato sauce and three cheeses.

Roasted Vegetable Lasagna


★★★★★

4.8 from 5 reviews

  • Author: Lisa
  • Total Time: 2 hours 20 mins
  • Yield: 8 - 10 1x
Print Recipe

Description

A vegetarian version of classic lasagna with roasted vegetables, delicious homemade tomato sauce and three cheeses.


Ingredients

Scale

Equipment: You'll need a deep dish 9"x13" casserole or something comparable in volume.

  • 1 1-pound box of lasagna noodles (I use noodles that need to be boiled but no-boil noodles will work well too)
  • Kosher salt
  • ½ cup plus 1 tablespoon olive oil, divided

For The Roasted Veggies:

  • 1 pound of carrots peeled and sliced into ¼-inch rounds
  • 2 red bell peppers, seeds and ribs removed, cut into 1-inch dice
  • 2 medium yellow onions, peeled and cut into 1-inch dice

For The Tomato Sauce:

  • 6 tablespoons olive oil
  • 1 tablespoons minced garlic (2 large cloves)
  • 1 teaspoons crushed red pepper flakes
  • 2 28-ounce cans good quality Italian plum tomatoes (I recommend San Marzano or Organic)
  • 1 6-ounce can tomato paste
  • ½ cup water
  • 1½ teaspoons dried basil
  • 3-4 cups of shaved broccoli crowns (from 1 or 2 crowns). To shave broccoli, slice the crowns very thinly into small florets and crumbles.

For Assembling The Lasagne:

  • 1 pound of shredded mozzarella cheese
  • 1 pound of ricotta cheese (reduced fat is fine)
  • 2 ounces grated Parmesan cheese - about ⅔ cup - plus more for sprinkling on top (I recommend Parmigiana Reggiano)

Optional Garnish: Lots of chopped fresh basil leaves (adds great flavor!)


Instructions

  1. Roast the Vegetables: Preheat oven to 425ºF. In a large bowl, toss vegetables with 3 tablespoons olive oil and 1 teaspoon salt. Spread out on a rimmed baking sheet and roast in the center of the oven for 25 minutes. Toss and return to the oven for 10-15 minutes longer, or until onions are starting to brown.
  2. Make the Sauce: While the veggies are roasting, heat 3 tablespoons oil with garlic and red pepper flakes, in a large cooking pot or dutch oven over medium heat. When the garlic starts to sizzle, let it cook, stirring constantly, for 30-45 seconds (don't let it brown). Pour in the tomatoes, tomato paste, water, basil and 1 teaspoon salt. Bring to simmer and cook, partially covered, for 30 minutes. Puree the sauce with an immersion blender or in a food processor or blender, in batches. Stir in shaved broccoli and roasted veggies.
  3. Cook the Noodles: While the sauce is cooking, bring a large pot of water to a boil. Add 1 tablespoon olive oil and 1 teaspoon of salt to the water. Lower the lasagna noodles into the pot one at a time so they're less likely to stick together. Cook until al dente, per package instructions, stirring often with a wooden spoon to separate noodles. Drain noodles, run some cool water over them, and lay them out on a sheet pan. Cover with a damp dish towel.
  4. Assemble The Lasagna: Preheat the oven to 375ºF and set the oven rack in the center position. Spread a little sauce over the bottom of the casserole dish. Arrange a layer of 4-5 noodles on top. Cover with ⅓ of the sauce. Sprinkle on ⅓ of the mozzarella. Spoon ½ of the ricotta around evenly, in little blobs. Sprinkle on ⅓ of the parmigiana cheese. Repeat with a second layer of noodles, half the remaining sauce, half the remaining mozzarella, the rest of the ricotta, half of the remaining parmigiana. Add the final layer of noodles, the rest of the sauce, the rest of the mozzarella and parmigiana.
  5. Cover the casserole tightly with a double layer of foil but tent it a bit so the foil doesn't touch the top layer of cheese. Cook for 40 minutes. Remove the foil and cook for 10-15 minutes more, until the sauce is bubbly and the cheese is melted. Let the lasagna rest for 15-20 minutes. Slice and serve. Sprinkle with fresh basil, if you like.
  • Prep Time: 20 mins
  • Cook Time: 2 hours
  • Category: Main Dish
  • Method: Bake
  • Cuisine: Italian

Keywords: vegetarian lasagna

Did you make this recipe?

If you make this recipe, please let me know how it turns out for you! Leave a comment below and share a picture on instagram with the hashtag #panningtheglobe

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Filed Under: All Recipes, Casserole, Entertaining, Europe, Italy, main course, Vegetarian

Reader Interactions

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    Recipe rating ★☆ ★☆ ★☆ ★☆ ★☆

  1. B

    October 29, 2020 at 1:30 pm

    This was good! I don't care for broccoli so I added fennel to the roasted vegetables. As you said you don't miss the meat.

    ★★★★★

    Reply
  2. Nicollet

    December 30, 2019 at 1:13 pm

    The roasted flavor of the vegetables goes so well with the lasagna! I used a little more mozzarella and a little less ricotta (for personal taste reasons) but the whole thing was awesome!

    ★★★★★

    Reply
  3. Freya Osborne

    March 14, 2017 at 1:15 am

    Great recipe for lasagna. I will try this at home today. Thanks for sharing.

    Cheers,

    Freya

    ★★★★★

    Reply
  4. Joel Silberman

    March 13, 2017 at 8:21 pm

    Hey Lisa
    Thanks for another great dinner.
    The taste of the roasted veggies really came through - loved that it was not uber cheesey.
    Will do it again - but will spice up the sauce a bit more (more seasoning/hot pepper) - but fine line as I would not want to overpower the veggies.
    Fun empty nest dinner - as we now have lots left over for lunch all week!

    Good luck with the storm....
    Have ingredients on hand to do some more cooking.

    Joel

    ★★★★

    Reply
    • Lisa

      March 15, 2017 at 3:49 pm

      Hi Joel. I'm glad you enjoyed the veggie lasagna, despite it needing more spice to suit your tastes. I adore meaty, cheesy lasagna but I feel a little less guilty going back for seconds and thirds with this one since it's packed with veggies and lighter on the cheese. Did you enjoy the storm? We did. I cooked up a storm 🙂 - vegetarian chili and teriyaki salmon bowls. Talk soon...

      Reply
  5. jennifer goldyn

    January 19, 2017 at 11:43 am

    This looks incredible!! LOVE all the veggies! What a great recipe!

    ★★★★★

    Reply
    • Lisa

      January 19, 2017 at 11:59 am

      Thanks Jen!

      Reply

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