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Butternut squash and spinach lasagne with blue cheese

I’m really into vegetarian lasagnes at the moment. Dreaming up pairings of vegetables that would work well drowned in béchamel and sandwiched in between sheets of pasta. I did a mushroom and kale lasagne recently that went down well, so I thought I’d bring you another. This is a really nice combination of sweet squash, creamy sauce and salty cheese, the spinach breaks up the richness, brings colour and health too. I used dolcelatte (OMG I could eat a packet of that to myself in one minute flat) but any blue cheese would work. I love a blue cheese in a veggie lasagne, and only use enough to provide  savoury saltiness, but if you don’t then just go for parmesan or even a mature cheddar. Or gruyere? Hey, go mad, as long as you don’t use Dairylea, it’ll be fine.

There are two squashes in the recipe as I have tried making it with one and it’s not generous enough; the lasagne required more filling. I have made this twice now, one time the lasagne sheets stuck to the bottom, to rectify this please make sure you ladle some sauce on to prevent it sticking, just enough to cover the base of the dish. I have included this in both weekend feasting and midweek meals, as I whipped it up in half an hour (leaving it ready to cook later that day). It is do-able midweek, as the béchamel (my wonderful microwave method) is so quick and fuss free.

Serves: 6/8 adults
Prep time: 20 minutes
Cook time: 45 minutes
Total time: 1 hour 5 minutes

2 x butternut squashes, peeled and cut into bitesize chunks
1 tablespoon of olive oil
260g spinach (or thereabouts), washed
9/12 sheets of dried lasagne
100g dolcelatte cheese (or other blue variety)

Quick microwave bechamel: 
1l whole milk
75g plain flour
75g butter
1 teaspoon of english mustard (optional)


  1. Preheat oven to 180C. Roast your chunks of squash tossed in oil for about 30-40 minutes, until just shy of being perfectly cooked – you want a little bite left in them to keep their shape, as remember they will cook for longer later. Toss them around half way through. You could do this bit ahead of course. 
  2. Wilt the spinach in a hot pan by gently stirring it around over a high heat in just a tiny bit of water – the water that is still clinging to the leaves after you have washed it is just perfect. Do this until it wilts, around a couple of minutes is usually enough. Set aside to let it cool for a minute, then squeeze all the water out – be brutal, you don’t want a watery lasagne. 
  3. Now make your béchamel by putting all the ingredients – cold (it won’t work with hot milk) – into a large jug or bowl and cook for 5-7 minutes on high. This will differ for each microwave as they vary so much. Whisk every minute or so. After a while the butter will melt, the flour lumps dissipate – and then suddenly it will really start to thicken. At this point, turn down the heat to medium and cook out the flour for a further 3 or 4 minutes. Add a spoonful of mustard, some salt and pepper, and set aside. 
  4. Once you have your components ready – the roasted squash, wilted and squeezed spinach and béchamel sauce ready – begin to make the lasagne. Start by mixing a couple of ladles worth of sauce into the spinach to make it nice and saucy. Then ladle a little sauce into the base of the dish to prevent the lasagne sticking. Add 3 sheets (or 4 if your baking dish is huge) to the base of the dish. Now spread the spinach and sauce mix into the dish on top of those sheets. And now 3/4 sheets more. Tip half the squash in, along with half the remaining sauce on top. And 3/4 more sheets. The rest of the squash and rest of the sauce. Now crumble the cheese all over and spread the whole thing with a palette knife or similar to smooth. 
  5. Bake for 35-45 minutes or until bubbling and brown on top. Enjoy (it’s even better reheated the next day). 


  1. Anonymous
    October 6, 2014 / 11:02 pm

    Great tip re microwave bechemel sauce, thanks!

  2. October 7, 2014 / 12:03 pm

    I use it all the time, it's a great time saver! I'll never use the saucepan method again (apart from if I ever want to infuse the milk with a clove studded onion, which should only ever happen at Xmas!) Thanks for stopping by xx

  3. October 10, 2020 / 9:09 am

    Can I make this and freeze?

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