When the fridge looks spare but appetite doesn’t, I grate the last of the Gruyère, slice some leeks thinly, and make this comforting pasta bake. Silky with mascarpone and cream under a grilled, bronzed top, it invites the sort of seconds no one can resist.

Why This Leek and Gruyere Pasta Bake Works

There are evenings when only a dish laden with carbs dish will do. You carry it to the table and the day exhales. My leek and gruyère pasta bake is exactly that. Leeks soften into sweetness with almost no fuss. Gruyère brings nutty perfume. Parmesan adds savoury bite and a drift of snow on top.

The Mood and the Ritual

This is the recipe I reach for when the fridge looks bare. A few stray leeks, the end of a cheese wedge, and a little cream can still become supper. The leek and gruyère pasta bake feels thrifty yet generous. It gathers leftovers and turns them into something quick, easy and delicious.

As it bakes, the top freckles and the edges begin to bubble. The kitchen smells gently sweet from the leeks, and a little nutty from the cheese. Nothing is too neat, which is exactly the appeal.

Bring the skillet straight to the table and let it speak for itself. Bowls appear. People help themselves. Seconds seem obvious rather than cheeky, which is the whole point of food like this.

Texture, Always.

Mascarpone and double cream if you have it will do the quiet magic, giving the sauce its silk and gentle gloss. It clings without weight, so every tube is cushioned rather than drowned. On top, fine leek curls frizzle and turn a little toasty. A light drift of panko adds hush-crunch, just enough to keep each bite interesting.

Parmesan follows, melting in places and catching on the ridges. The top blisters in pleasing patches while the edges bubble and shine. You break in with a spoon and this is why the leek and gruyère pasta bake feels so right.

Molten underneath, nubbly on top, and entirely too easy to finish.

If You Liked This…

If this leek and gruyère pasta bake hit the spot, you’ll adore my bright, creamy Courgette, Lemon & Ricotta Rigatoni — all sunshine and silk loaded with Courgette. Or cosy up with a bowl of my Mushroom Gnocchi Soup pillowy gnocchi, deep mushroom flavour, and a spoon you won’t want to put down!

Yields: 4 Servings Difficulty: Easy Prep Time: 15 Mins Cook Time: 25 Mins Total Time: 40 Mins
This Leek & Gruyère Penne Bake is a triple-cheese, fully loaded pasta bake with sweet, slow-cooked leeks and a golden, buttery crumb. Comforting, festive, and weeknight-easy.

Ingredients

0/18 Ingredients
Adjust Servings
    For the pasta
  • For the sauce
  • For the topping

Instructions

0/17 Instructions
    Cook the pasta
  • Bring a large pot of salted water to the boil.
  • Cook the penne for 1 minute less than the packet time.
  • Drain, reserving 120 ml (½ cup) pasta water.
  • Soften the leeks
  • Heat the butter and olive oil in a deep frying pan over medium heat.
  • Add leeks and cook gently for 10 minutes until soft and glossy.
  • Stir in garlic and thyme for 1 minute.
  • Make the sauce
  • Pour in the cream, mascarpone and loosen with milk if necessary.
  • Add Dijon (if using) and bring to a gentle simmer.
  • Stir in Gruyère, Parmesan, and Cheddar until melted and smooth.
  • Season generously.
  • Combine
  • Tip the drained penne into the sauce and toss until every piece is coated.
  • Loosen with a splash of pasta water if needed.
  • Top & bake
  • Transfer to an ovenproof dish.
  • Mix breadcrumbs with melted butter, Gruyère, and nutmeg.
  • Scatter over the pasta.
  • Bake at 200°C (180°C fan) for 15–20 minutes until golden and bubbling.
  • Serve
  • Spoon into warm bowls while the cheese still stretches.

Notes

Hey Lolly's Kitchen Notes Leek timing: Don’t rush the leeks — their sweetness makes the dish. Festive tweak: Fold through leftover ham or turkey for Boxing Day. Green lift: A handful of chopped spinach or peas can be stirred through before baking. Make-ahead: Assemble, cool, cover, and chill up to 24 hours; bake from chilled, adding 5–10 minutes. Freezer: Freeze before baking (well wrapped) for up to 2 months. Thaw in the fridge, then bake.

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