Asparagus and Ham Lasagna

One of the things I most look forward to in springtime is asparagus! Unlike in the UK, where green asparagus are the norm, most people in Luxembourg prefer white asparagus. But did you know that they are in fact exactly the same plant?

An asparagus can turn green or white depending on how it is grown. When the spears pop out of the ground, they turn green, so in Luxembourg, farmers keep covering the asparagus with soil as they grow upwards, so that they stay white! White asparagus are more delicate in taste than their green siblings, and they need to be peeled, as the skin is quite tough and stringy.

At home, my mum would always dish up asparagus with a béchamel sauce – it’s a very popular springtime dish in Luxembourg, served with new potatoes. I thought about giving the whole thing a little twist, and am putting the asparagus and béchamel inside a lasagna! I’m adding some cooked ham too, but you can leave that out if you prefer a vegetarian version.

This recipe was created as part of my “Recipes for Staying Home” show, you can watch the episode here.

This is a recipe from my cookbook ‘Flavours of Home’.

Ingredients

450g white asparagus
a pinch of sugar
4 cooked ham slices
10 lasagna sheets
150g grated mozzarella
20g parmesan

For the béchamel:
90g butter
90g flour
100ml white wine
750ml asparagus cooking water
150ml cream
salt and pepper

Method

Serves 4 – Oven: 30 mins

Peel the asparagus and trim off the ends. Cut into bitesized pieces, and put the asparagus tops aside.

Put the asparagus stalks into a saucepan with 1.2l of boiling salted water and a pinch of sugar. Cook for 5 minutes, then add the asparagus spears and cook for another 3 minutes. Take the asparagus out of the cooking water with a slotted spoon. Reserve 750ml of cooking liquid for the béchamel.

For the béchamel: Melt the butter in a saucepan, add the flour and fry on a medium heat for a couple of minutes until the flour/butter mix starts to turn golden and fragrant.

Add the wine while stirring, then gradually add 750ml of the asparagus water, whisking between each addition and leaving it to cook for a minute or so, so that it thickens and you get a smooth sauce.

Then gradually add the cream. Once you have a smooth sauce, season with salt and pepper.

Preheat the oven to 180°C fan.

Assemble the lasagna: Cover the bottom of a ceramic ovenproof dish with sauce. Top with a layer of lasagna sheets, then spread another layer of béchamel over the sheets. Distribute half the asparagus over the béchamel, then top with a piece of ham. Sprinkle with a bit of mozzarella, then top with béchamel sauce. Add another layer of lasagna sheets, béchamel, asparagus, ham, mozzarella and béchamel. Top with a third layer of lasagna sheets, spread the remaining béchamel sauce over the top, then sprinkle with parmesan cheese (if using) and the remaining mozzarella cheese.

Bake in the preheated oven for 30 minutes or until the lasagna sheets are cooked through (the timing depends on the brand of lasagna sheets you’re using, check the package instructions).

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