Lasagne with Lentils & Spinach Pesto

A vegan version of lasagne packed with lots of vegetables, red lentils, a creamy 'cheese' sauce and to make it even more special. One for all the family.
Vegan lasagne with lentils & spinach pesto

As you know, I’m naturally drawn to spices; Indian and Middle Eastern food makes my belly happy and my soul excited, so I fill my days with nothing but these delicious dishes!

But it also means that sometimes I can forget just how delicious Mediterranean food can be.

I particularly love how Italians cook, they are renowned for their quality cooking, their ultimate passion and communal rituals, and love they pour in every dish.

They also utilise home-grown produce that is just bursting with fresh farm-to-table flavour and authenticity.

My heart (and belly) is fond of a superb and rich tomato sauce, you know the kind, the ones that make you want to lick the plate clean and savour every bountiful flavoursome forkful.

Especially when paired with a drizzle or two of a high quality olive oil and fresh sourdough.

But it’s been absolutely years since I last ate or even made lasagne, so I just knew that had to change ASAP.

Like a lot of Italian dishes, lasagne evokes fond memories; my mum used to make the most delicious lasagne.

And as I recreated that layer by layer, it reminded me just how therapeutic and delicious the combination of soft but al dente pasta, melting and oozing ‘cheese’ sauces and seasonal veggies could be.

So I present to you my homage to the Italian classic, my Vegan version of Lasagne packed with lots of vegetables, red lentils, a creamy ‘cheese’ sauce.

To make it even more special I have layered it with the most deliciously fresh and zingy spinach and walnut pesto, that you are going to want to put on EVERYTHING!

I made this for my friends the other night after telling them all about my newest creation, and they loved it just as much as I did! Phew!

This dish takes a little of time to make each component right, from the delectable and rich tomato and lentil filling, to the oozy cheesy sauce, but each step is super simple and, oh so worth it.

You can even make this dish the night before, the flavours improve overnight as they soak into all the wonderful vegetables.

Cook all the distinct elements the night before and assemble and bake on the day, or bake the day before and re-heat. Both work just and each other.

Unlike most of my dishes, this one doesn’t freeze well. But portioned in the fridge and re-heated the next day works amazingly, especially when served with a light and fresh salad.

And another bonus about this recipe is there are so many variations and substitutions you can make depending on your likes, preferences, and ingredients.

If you cannot eat or find onions, you can use leeks.

Add in courgette, peppers or your favourite vegetables to bulk out the meatier sauce, and get your five a day in one hit.

You can swap the red lentils for green, black or your favourite pulse.

And, swap out fresh basil, for any other fresh green leafy herb, or use spinach instead.

And, of course, the mushrooms! This recipe works just as well with or without them, personally I love the texture they give, but omit or replace with aubergine for the same textural mouth-feel if you aren’t a fungi fan.

I’d recommend making extra of the spinach and walnut pesto to keep in the fridge. You can stir it into gnocchi, pasta or risotto, generously slather on top of freshly baked sourdough, or use as the base on a pizza bread. Or just eat it straight out of the jar. It can be our little secret!

Have fun and enjoy, love Niki xx

The Recipe

Vegan lasagne with lentils & spinach pesto

Lasagne with Lentils & Spinach Pesto

A vegan version of lasagne packed with lots of vegetables, red lentils, a creamy ‘cheese’ sauce and to make it even more special. One for all the family.
Prep time: 40 minutes
Cook time: 30 minutes
6-8 servings
4.67 from 6 votes


For the tomato & lentil filling

  • 2 onions chopped roughly
  • 4 cloves garlic sliced
  • 1 courgette sliced finely
  • 2 red peppers chopped
  • 4 large mushrooms sliced
  • 5 large ripe tomatoes roughly chopped
  • 1 cup/200g red lentils washed well
  • 1 cup 250ml water
  • 1/2 tsp ancho chilli flakes or red chilli flakes
  • 1/2 tsp coconut sugar or sugar or choice
  • 1/2 tsp sea salt
  • Black pepper

For the cheesy bechamel sauce

  • 2 tbsp vegan butter
  • 4 tbsp plain flour
  • 2 cups/500 ml almond milk
  • 3 -.4 tbsp nutritional yeast
  • Big pinch sea salt
  • Twist black pepper

For the pesto

  • 3/4 cup walnuts
  • 1/4 cup toasted pine nuts or an additional 1/4 cup walnuts for a pine nut free version
  • 2 handfuls of spinach
  • 1 handful basil
  • Juice 1/2 lemon
  • 1 tsp sea salt
  • 1 clove garlic
  • 3 tbsp nutritional yeast
  • 2 tbsp olive oil
  • 1/3- 1/2 cup water
  • Lasagne sheets

For the toppings

  • Vegan cheese or cashew cheese
  • Cashew Parmesan


To make the tomato & lentil filling

  • Add your oil and onion to a wide bottom pan and fry gently on a low heat for around 10 minutes until soft and browning.
  • Add the garlic and fry for 30 seconds more, then add the peppers, courgette and mushroom. Fry for a further couple of minutes.
  • Add the tomatoes, lentils, water and sugar to the pan and cook on a low heat for 25 minutes (covered).
  • Add the salt, black pepper and chilli flakes to the pan and simmer for a further 5 minutes.

To make the cheesy bechamel sauce

  • Add the butter to a frying pan and melt on a low heat, then add the flour. Stir to combine well.
  • Next, add the almond milk and nutritional yeast. Simmer for 5 minutes, stirring constantly to ensure no lumps form.
  • Finally, season well and remove from the heat.

To make the pesto

  • Add all the ingredients to your food processor or high-speed blender and blitz until everything is combined with the texture you prefer. You may need to scrape the sides down a few times.

To make the lasagne

  • In a medium roasting dish (I used a 25cm)–Layer the tomato veg filing then 3 lasagna sheets.
  • Then half the cheese sauce, top with pesto, then another layer of tomato veg mix, 3 lasagna sheets, then the remaining cheese sauce (cover the edges of the lasagna sheets).
  • And finally, top pesto and either a sprinkle or vegan cheese or dollops of cashew cheese.
  • Cover with foil and bake for 30 minutes on Gas Mark 4/350 degrees.
Print Recipe

I'd love to hear your comments…

  • Hi, can I replace the vegan butter by cashew/almond butter? Thanks from Portugal 🙂

  • 4 stars
    This tastes amazing. However… it’s taken 1 hour to cook! The lasagne sheets were still hard, so I I just kept putting it in the oven for extra 10 minutes at a time and checking. We didn’t eat until 9.30pm. I think the lasagne sheets definitely needed blanching.

  • Hi Niki.

    Just cooked this for the family and loved it, thanks for the recipe !! Also, any idea on calories per portion (long shot I know)

  • Hello! I love the look of this lasagne. I’m sorry I’m confused (again) about cup measurements. I never use these.

    Can I ask if it’s UK or US cups? If so I’ll work out the recipe measurements if I can find table to convert the different elements. Or do you have the measurements in grams etc? I want to make it this evening and I don’t want to mess up quantities. Thank you soooooo much xxx

  • Jodie Holyoak

    Would Plain GF flour work aswell as I need it to be GF.Or a different flour? Can’t wait to try it! Looks delicious!

  • Lizzie Alexander

    5 stars
    This is super delicious!! I used green lentils instead of red, and aubergine instead of mushrooms. My meat eating friends thought it was great!

  • Richard Kerby

    5 stars
    This is the most delicious lasagna ever. My ‘carnivorous’ sons said this recipe was the best they have ever eaten. Very very tasty !!

  • Hi Niki, is the yeast fresh or dry? Is the nutritional yeast the same thing as the beer one? 😉

    Can’t wait to try it out!

    • Hi Aga
      Its deactivated yeast – which is different to normal yeast. It gives a cheesy flavour. Don’t worry if you can’t find it. You can leave it out.

  • Omg all my favourite veggie and lentils cant wait to try it

  • I’m struggling to find fresh basil in my community. Could dried basil be subbed? What would you recommend for th ratio?

  • This looks great! Could it be assembled and refrigerated the day before needed and then just baked on the day?

  • Hi this sounds lovely, can I freeze it

    • Nathalie

      I’m interested in knowing if you tried freezing it Susan

    • Hi Susan
      I haven’t tried freezing. let me know though.
      Much love
      Niki xx

  • Francesca

    This looks and sounds delicious. I will definitely try it when I’ve topped up my stock of walnuts and pinenuts. I can’t wait 🙂

  • What kind of lasagna noodles did you use? did you cook them first? Would love to make this for my clients.

  • 5 stars
    I added eggplant and used black lentils instead and ooooooomg this was the bomb! Loved the béchamel sauce and pesto, they worked so well together. And just the richness and variety of flavors is amazing! Thank you for this recipe 🙂

  • Looks sooooo good ! I can’t eat onions, would you leave them out or any substitutes you recommend?

    • Hi Katie
      Can you eat leeks? That would work really well.
      Otherwise I would just omit them.
      Love, Niki xx

  • Nathalie

    Looks so yum! When do you add he red pepper, zucchini, and mushroom to the onion/garlic mixture?

    • Hi Nathalie
      So sorry! Just add after cooking the opion and garlic. I’ll amend.
      Best wishes
      Niki xx

  • This looks amazing! I’m going to try and work out how to sub the tomatoes and peppers and make a version of it.

    • Hi Hayley
      You could sub them for some veg stock. Ie put 1.5 – 2 cups of veg stock instead of the tomatoes, peppers and water.

      Love Niki x

  • 5 stars
    It has been quite a while since I have made lasagna myself, and I absolutely love it! I really want to experiment with eggplant and zucchini lasagna sometime. I absolutely love your pesto recipe as well–so fresh and beautiful!

    • So glad you like it Cassie!
      I’d totally forgetten how good it is!
      Lots of love
      Niki xx

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