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Crockpot Vegetable Lasagna

Fresh basil, tons of veggies, and three cheeses brighten up jarred pasta sauce and no-boil noodles in this super delicious, easy crockpot vegetable lasagna.

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vegetarian lasagna made in a crock pot

Can I Get a Standing Ovation For This Crock-Pot Vegetable Lasagna?!

Pantry staples make up the bulk of this hearty, satisfying, healthy vegetable lasagna—don’t you just love recipes like that? A jar of pasta sauce (whatever you’ve got), no-boil noodles (genius), all spruced up with some fresh veggies, fragrant basil and cheese (of course)—dump it all into your Crock-Pot and consider the masses fed!

If you’re really pressed for time—and we’ve all been there—cut all the corners and go ahead and use pre-shredded mozzarella, and pre-chopped veggies! This lasagna is forgiving, and the final product will still be killer.

ingredients laid out for vegetarian lasagna mushrooms, eggs, parmesan cheese, mozzarella cheese, pasta, ricotta, zucchini

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chopped parsley, ricotta, eggs salt and pepper in a bowl

What Are the Best Vegetables for Lasagna?

We are in love with this version of easy veggie lasagna! We’ve opted to withhold the meat, both for our family’s health (we hear eating more veggies is always a good thing) and our planet—plus, when lasagna is this delicious without meat, why add it? Sometimes, truly, less is more.

Here are the vegetables we used to make this dish devour-worthy:

  • Spinach, spinach and spinach! Three layers of it to be exact. Iron-rich and colorful, it’s a lasagna superstar.
  • Green zucchini and yellow squash make for a colorful dish, and readily absorb the other flavors in this dish as it cooks, which we love.
  • Mushrooms! It’s fine to skip them if you are not a fan, but they add a wonderful earthy meatiness to our Crock-Pot veggie lasagna.
pasta sauce and lasagna noodles in a crockpot
hand spreding ricotta filling on lasagna noodles in a crockpot
spinach, mushrooms and zucchini layered into a crockpot
tomato sauce and cheese layered into a crockpot

How Do You Make Vegetable Lasagna?

How is it possible to make a such a stunning pasta dish in the crock pot? Well, I’m so glad you asked! Here’s the 101:

  1. Layer, layer, layer. Prep and assemble your ingredients, and then settle in for a quick layering session. Stack all that goodness—cheese, sauce, veggies—three times over so that you end up with a gorgeous tower of lasagna.
  2. Use raw, no-boil lasagna noodles. Crock-Pots create a lot of moisture, so you don’t have to boil the noodles ahead of time (yay!). You actually want them to be dry in order to soak up the delicious juices that the veggies release as they cook.
  3. No need to cook your veggies ahead, either! Everything goes in raw, and thanks to Crock-Pot magic, three hours later you’ve got the cheesy, warm, satisfying vegetarian dinner that dreams are made of.

*Be sure to read the tips for more secrets on how to make this crockpot lasagna a smashing success.

uncooked crock pot vegetarian lasagna
a crock pot with a towel under the lid.
close up of melted fresh mozzarella on top of a veggie lasagna
finished vegetarian lasagna with basil and parmesan cheese

Four Tips for Making Healthy Vegetable Lasagna:

Tip #1: Spread a little bit of sauce in the bottom of the Crock-Pot to ensure that the noodles don’t stick.

Tip #2: Place a towel under the lid and wrap it in the handle. The towel will help wick away moisture as the lasagna cooks and your cheese won’t get soggy.

Tip #3: Break the noodles to fit your size crock pot. It’s ok to overlap them a little. You may or may not use the whole box—it depends on how noodle-y you like your lasagna.

Tip #4: Don’t skip the fresh basil. If you do anything to make this dish a success, it will be to use fresh basil! There is nothing in the world that compares to the verdant fragrance that it brings to this dish.

finished vegetarian lasagna in a crockpot with basil and parmesan cheese

More Magically-Easy Pasta Dishes:

finished vegetarian lasagna with basil and parmesan cheese with serving spoon
spoon scooping out a serving of finished vegetarian lasagna with basil and parmesan cheese

Did You Make This Easy Slow Cooker Lasagna?

If you make and enjoy this vegetable lasagna, we’d love to hear about it! Post a picture to Instagram and tag @themodernproper and #themodernproper so we can celebrate your dinner win along with you. Happy eating!

Crockpot Vegetable Lasagna

  • Serves: 7
  • Prep Time:  15 min
  • Cook Time:  3 hrs
  • Calories: 690

Ingredients

  • ⅓ cup basil, chopped
  • 15 oz container ricotta cheese
  • 2 large eggs
  • 1 tsp salt
  • 1 tsp garlic powder
  • ½ tsp ground pepper
  • 25 oz jar pasta sauce
  • 1 lb box lasagna noodles
  • 8 oz mushrooms, sliced
  • 2 small zucchini, sliced
  • 2 small yellow squash, sliced
  • 2 cups spinach, roughly chopped
  • 16 oz mozzarella, grated
  • 8 oz fresh mozzarella, thinly sliced
  • parmesan, to taste

Method

  1. In a medium bowl combine the basil, ricotta, eggs, salt, garlic powder and pepper.
  2. In a 5 qt crock pot spread ¼ cup of pasta sauce and top with a single layer of uncooked lasagna noodles. Follow by spreading ⅓ of the ricotta mixture.
  3. Next layer a third of each kind of vegetable (mushroom, zucchini and yellow squash) and top with ⅓ of the chopped spinach and then ⅓ of the grated mozzarella. Lastly, layer with 1/4 of remaining sauce.
  4. Starting with the dried lasagna, repeat all of the above steps two more times. Finish with a layer of dried pasta, remaining sauce and a layer of fresh mozzarella.
  5. Place a clean kitchen towel between the lid and the slow cooker to catch any excess liquid produced by the steam in the crock pot.
  6. Cook on high heat for three hours, until the noodles are tender and the sauce is absorbed.
  7. Finish with fresh parmesan cheese and any extra basil you have on hand.

Nutrition Info

  • Per Serving
  • Amount
  • Calories690
  • Protein42 g
  • Carbohydrates69 g
  • Total Fat29 g
  • Dietary Fiber10 g
  • Cholesterol126 mg
  • sodium1072 mg
  • Total Sugars10 g

Crockpot Vegetable Lasagna

Questions & Reviews

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  • Johnson

    How long would I cook it if I was trying to make half this recipe? Would it be to small an amount to cook well?

    It would probably still cook the same amount of time. It does freeze well if you decide to make a full batch. Hope you enjoy!

  • Shontelle

    I'm wondering if I can sub the squash/zucchini with eggplant... and should I cook the eggplant first? I just love eggplant parm so I'm trying to swap for maybe an eggplant lasagne!

    We haven't tested this with eggplant but don't imagine you need to cook it before.

  • Kelly

    This recipe looks delicious and I would like to try it for a group dinner at the beach. Unfortunately two people in the group do not like mushrooms. What would you recommend as a good substitute for the mushrooms?

    Just add more of whatever vegetables you like in the recipe. Hope you enjoy!

  • ktoliver

    How long would you suggest cooking, in an instapot?

    We have not tested this yet in an instant pot.

  • KDenton

    Ok to freeze leftovers?

    Should be fine!

  • Sophia

    Marvelous! Just made this for a friendsgiving potluck and it turned out so well. Love all the flavors and everything cooked perfectly. I followed the recipe as is and didn't make any changes.

    Thanks Sophia, so happy you loved it!

  • I tried this in my Instant Pot using the slow cooker feature, it wasn't working. I read some reviews about the slow cooker feature of the Instant Pot and figured out it isn't the best slow cooker. I couldn't take the ingredients out so I cooked it for 4 mins using the pressure cooker feature, I set it on normal (not high) It came out great! I put a piece of parchment on top to catch any excess fluid while it cooked. I also added one cup of water. I needed to use up some zucchini, this recipe was perfect! Thank you!

    That's great to hear it worked out! We are so happy you enjoyed it Janet!

  • Jess

    This was really good! My first time making lasagna too. My only issue was the thinly sliced mozzarella on top cooked too much rather than just melting. Not sure if there are any pointers there? Will absolutely make this again.

    Thanks Jess, we are so happy you loved it! You could try thicker cut mozzarella.

  • KDenton

    Delicious. I made just like the recipe except for the fresh mozzarella. Hubby says it’s a “keeper”. The fresh basil is a must. I am curious how others managed to scoop the layers out of the crockpot. Definitely tricky. Worked best after it had cooled quite a lot.

    Thanks, we are so glad you loved it!

  • Alana

    This was a very easy, delicious recipe! I found a way to do the lasagna in the oven since our pot had yet to be washed. You put the oven at 325°F and cook for around 2 hours. Also, to add a nicer cheese biye, I recommend adding some gruyere and asiago. Nice melting cheeses and they add a nice bite to dishes!

    Glad you enjoyed this Alana and that you were able to figure out an oven method.