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This vegetarian caprese skillet lasagna recipe is a delicious lighter take on lasagna. It’s really easy and all cooked right in the skillet!

You may also enjoy my Creamy Chicken Lasagna or Classic Homemade Lasagna.

healthy vegetarian caprese skillet lasagna with serving spatula

I had one goal with this recipe: make a lasagna in one pan with minimal effort, good flavor, and a reasonable amount of calories. This is not a super rich and cheesy lasagna, but it is a lasagna that you can throw together mid-week without worrying too much about it being unhealthy. There is cheese in here (mozzarella fresca), but there isn’t a ton of it. I really liked this healthier take on lasagna.

I used the classic caprese flavors in here: mozzarella, basil, and tomatoes. Garlic and thyme amp up the flavor even more, but this is definitely a lighter recipe.

If you’re willing to turn your oven on in the summer, this would actually be a wonderful summer lasagna recipe to try.

If you love this flavor combo, you may also like my Caprese Tortellini Pasta Salad, this Caprese Grilled Cheese Sandwich Recipe, The Best Caprese Crostini, or my Balsamic Caprese Pasta Salad

close-up of Caprese skillet lasagna

This easy skillet lasagna is about as simple as lasagna gets.

How to make skillet lasagna

Sauté the onion, add the rest of the sauce ingredients to the pan, heat it through, add the lasagna noodles, then pop it in the oven. You then add the cheese and it’s done when it’s melted.

This one pan lasagna uses the no-bake lasagna noodles, so there’s no need to boil them before adding them to the skillet.

healthy lasagna in a cast iron skillet

Hope you love this cast iron lasagna recipe!

Let me know if you’ve tried it in the comments below. You may also like my vegetarian pasta e fagioli if you liked this recipe.

a serving spatula with a piece of healthy skillet lasagna

Would you try a lighter take on lasagna, or do you prefer saving it for a special treat?

cast iron skillet with healthy lasagna
3.75 from 4 votes

Healthy Caprese Skillet Lasagna

This vegetarian caprese skillet lasagna recipe is a delicious lighter take on lasagna. It's really easy and all cooked right in the skillet! 
Prep: 10 minutes
Cook: 50 minutes
Total: 1 hour
Servings: 4

Ingredients 

  • 1 tablespoon olive oil
  • 1/2 medium onion chopped
  • 4 cloves garlic minced
  • 1 (14 fluid ounce) can diced tomatoes with juices
  • 2 cups skim or 1% milk
  • 5 dashes Italian seasoning
  • Handful basil torn
  • 2-3 sprigs fresh thyme stems removed
  • Salt & pepper to taste
  • No boil lasagna noodles to taste (will vary depending on your skillet)
  • 8 ounces fresh mozzarella sliced

Instructions 

  • Preheat oven to 375F and move the rack to the middle position.
  • Sauté the onion in a cast iron skillet for 5-7 minutes. 
  • Add the garlic to the skillet and cook for about 30 seconds or until fragrant.
  • Add the diced tomatoes, milk, Italian seasoning, thyme leaves, basil, and salt & pepper. Give it a good stir and let it heat through a bit. 
  • Break the lasagna noodles into pieces so you can layer them in the skillet. There's no exact science to this and it's fine if they overlap a bit (all noodles should be mostly submerged in the sauce). Leave about an inch or so from the top so it doesn't bubble over as it cooks.
  • Place the skillet in the oven and bake for 40 minutes. 
  • Take the lasagna out of the oven and top with the sliced cheese. Return the skillet to the oven for another 10 minutes or until the cheese is nice and melty. You can broil it for a few minutes at the end to make the cheese brown a bit if you wish (just watch it carefully).
  • Let the lasagna sit for about 5-10 minutes before serving. 

Notes

  • I suggest adding more salt to this recipe than you'd perhaps normally add. No-boil lasagna noodles tend to be a bit less flavorful, which is a tradeoff for a recipe that requires fewer steps. 
  • I used my trusty 10-1/4" Lodge cast iron skillet to make this recipe.
  • Serves 4-6.

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Hi! Iโ€™m Natasha.

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3.75 from 4 votes

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26 Comments

  1. Diana says:

    Question, do you drain the can of diced tomatoes or no? Mine came out really watery, but Iโ€™m pretty sure itโ€™s because I didnโ€™t add enough noodles to soak it all up! Should I have kept putting the noodles in a few layers deep? The flavor was still delicious so I will definitely try to make this again.

    1. Natasha says:

      Hi Diana! I didnโ€™t drain the tomatoes. Yes, I kept adding noodles to make layers. Iโ€™m glad the flavors were good at least! Let me know how the second attempt goes. ๐Ÿ˜Š

  2. Susie Wall says:

    4 stars
    This was good. We first cooked 1/2 pound of Italian sausage in the pan so no olive oil was needed. If we hadn’t added the sausage, I think it would have been a little bland. My husband still wanted more flavor. We added 1 1/2 onions which is a lot more onion because we like onion. We added a little more garlic too. We had a huge cast iron pan. We used regular lasagna noodles that we first boiled for about 8 minutes and then just chopped them up randomly. Some were big, some were small. We have 4 boys and they drink whole milk so that’s what we used. I’m not afraid of fat anymore so it was fine. We then just mixed it all together and we thought it was too watery but as it cooked a bit more on the stove top, it lost the extra liquid. It seemed like everything was cooked but we still baked it for 25 minutes, then took it out and put enough cheese to cover the entire surface area which was a lot more than 8 oz. (I used cheddar cheese too), Is the reason for baking it, so all the ingredients meld together more and it firms up? I usually hate waiting for it to sit for 10 minutes but we did it this time. I will for sure make it again.

    1. Natasha says:

      So glad you liked it! Your tweaks sound delicious. I’m a bit confused about your question re: baking it. I use uncooked lasagna noodles so if I didn’t bake it, it would be raw.

  3. RH says:

    5 stars
    I love 1skillet recipes, and trying lasagna had me intrigued. I couldn’t help but to add to this wonderful blueprint you’ve put together…. I added some mild Italian sausage right after the onions softened, then some left over mushrooms. I used 1 pack of noodles, 8oz of cheese and doubled the recipe for everything else.
    I cooked it in a 13.25″ skillet and it came out perfect. Everyone wanted seconds. Thank you!!

    1. Natasha says:

      I am so happy that the recipe inspired you! Your version sounds delicious!! ๐Ÿ™‚

  4. Anne Vander Molen says:

    Covered or uncovered in the oven? Burnt in 30 minutes and no sauce left

  5. Anne Vander Molen says:

    Horrible burnt dried up noodles! Not enough sauce to submerge even 4 noodles! And I used exact size of tomatoes…14 ounces! My supper is ruined! I have higher standards than most??

    1. Natasha says:

      Hi Anne! I didnโ€™t cover it. Did you put it on the middle rack? Iโ€™m not sure what went wrong. ๐Ÿ™

      1. Laura says:

        Maybe her skillet was a different size? A bigger skillet would require more sauce.

        1. Natasha says:

          That’s true!

  6. Stephanie says:

    5 stars
    Absolutely delicious! I’m making it again tonight (2nd night in a row), since we had an unexpected guest last night. I didn’t get to have much of it so I’m eating more tonight! Going to add capers this time.

    1. Natasha says:

      Yay!! That’s what I like to hear. ๐Ÿ™‚ Thanks for letting me know! Love capers too!

  7. Christina Seward says:

    This looks absolutely amazing! I can’t wait to try it!

    1. Natasha says:

      Thanks so much, Christina! ๐Ÿ™‚

  8. Hilary says:

    Hi, just love looking at your recipes,you make them look so simple to make,can’t wait to try them.
    Regards,hilary

    1. Natasha says:

      Thank you! Hope you like them. ๐Ÿ˜„

  9. Karly says:

    Lasagna in a cast iron skillet. All the yes in the ENTIRE world! Gotta try this!

    1. Natasha says:

      Thanks, Karly!! ๐Ÿ™‚

  10. Mary Ann | The Beach House Kitchen says:

    Whoa Natasha! This looks awesome! Love that it’s a one skillet meal, and that it’s a bit lighter than the traditional lasagna. I don’t often make lasagna because it’s too much work and so rich. Can’t wait to try your recipe!

    1. Natasha says:

      Thanks so much!! Yeah, I wanted to try something lighter, less work, and healthier. Let me know if you try it! ๐Ÿ™‚