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French Onion & Mature Cheddar Pastry Twists

A cheese straw is already a very good thing. Give it slowly caramelised onions, sharp Cheddar, Dijon mustard and fresh thyme, though, and it begins to have rather grander ideas about itself.

These French onion and Cheddar puff pastry twists take everything wonderful about a classic cheese straw and make it a little more indulgent. Think buttery, golden layers of pastry, sweet, savoury onions and plenty of mature Cheddar, with a final scattering of Parmesan for good measure.

They're the sort of thing you put out with drinks, only to discover that half the platter has disappeared before anyone has thought about dinner. With the entertaining season approaching, I can think of very few reasons not to have a batch on standby.

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Approximately 24 twists All-butter puff pastry Make ahead & freeze Serve warm

A Cheese Straw with Rather Grand Ideas

The inspiration comes from one of the great French comfort dishes, soupe à l'oignon. That wonderful combination of deeply caramelised onions, melted cheese and just enough sharpness to balance the sweetness.

Here, the onions cook slowly with butter and olive oil until beautifully soft and golden. A little Dijon mustard brings warmth, while red wine vinegar cuts through the richness. Fresh thyme adds something fragrant without taking over.

Golden French onion and mature Cheddar pastry twists piled on a dark round ceramic platter, surrounded by autumnal food props
Golden, flaky and very much ready for company.
Caramelised brown onions in a pale pink ceramic bowl, with golden cheese twists softly visible behind
The onions are worth waiting for.

A Little Patience with the Onions

If there's one part of this recipe worth giving your attention, it's the onions.

Proper caramelisation takes time. You're looking for onions that have softened, turned a rich golden brown and developed that almost jammy sweetness. Turn the heat up too high and they'll catch before they've had a chance to develop their flavour.

From the Pastry to the Oven

Sandwich the filling between sheets of all-butter puff pastry, add mature Cheddar and finish with Parmesan, and you have something altogether more interesting than your average party nibble.

Thin layer of Dijon mustard spread across a sheet of ready-rolled puff pastry
A thin layer of Dijon, right to the edges.
Caramelised onion and Cheddar filling spread over an unbaked puff pastry sheet
The onion mixture goes on once completely cool.
Sealed puff pastry sandwich with crimped edges and a pizza cutter beside it
A sealed pastry sandwich, ready for the cutter.
Raw cheese and onion puff pastry strips twisted on baking parchment before baking
A few turns, then onto the tray.
Four uncooked French onion and Cheddar pastry twists lined up on a baking-parchment-covered tray
The twists before their final transformation.

Made for the Entertaining Season

There's something immensely satisfying about bringing a platter of warm, golden pastry to the table. Particularly when it looks as though you've gone to considerably more trouble than you actually have.

These twists work beautifully for Christmas drinks, festive gatherings or simply an evening when a glass of wine deserves something better than the contents of the crisp cupboard.

A hand lifting a golden French onion and Cheddar pastry twist from the serving platter
The first one rarely stays on the plate for long.
Broken golden puff pastry twists with flaky layers and caramelised onion filling on the dark ceramic serving plate
All those beautifully crisp layers.

They're also remarkably useful to have in reserve. The twists freeze well and can be brought back to life in the oven, restoring that lovely crispness when you're ready to serve. I rather like the idea of having a batch tucked away for unexpected visitors. Or, frankly, for myself.

What to Serve with French Onion & Cheddar Twists

I'd keep things fairly simple. A bowl of good olives, some marinated peppers, perhaps a little whipped feta or burrata with sun-dried tomatoes and pistachio pesto crumb if you're making a proper spread.

They also make a lovely addition to an autumn grazing board, especially alongside grapes, nuts and a few good cheeses. Serve them warm, pour something lovely and leave the platter within reach.

Just don't expect leftovers.

Get the Recipe

The full ingredients, measurements and step-by-step instructions are in the recipe card below. Save or print it for the next time you're entertaining.

french onion cheddar pastry twists

French Onion & Cheddar Puff Pastry Twists

Buttery, golden puff pastry twists filled with sweet caramelised onions, mature Cheddar, Dijon mustard and fresh thyme, finished with a scattering of Parmesan. Crisp, savoury and rather difficult to stop eating. A make-ahead party nibble that's particularly good for Christmas entertaining.
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Prep Time: 10 minutes
Cook Time: 35 minutes
Course: Appetisers, Party Food
Cuisine: Modern Mediterranean
Keyword: Cheese and onion twists, Christmas party food, French onion twists, puff pastry twists, savoury pastries
Servings: 24 Twists

Ingredients

  • 4 × 320g sheets ready-rolled all-butter puff pastry
  • 6 large brown onions approximately 900g, thinly sliced
  • 40 g unsalted butter
  • 2 tbsp olive oil
  • 2 tsp red wine vinegar to confirm
  • Soft brown sugar quantity to confirm
  • 2 tsp Dijon mustard
  • 4 tsp fresh thyme leaves
  • 360 –400g mature Cheddar finely grated
  • 2 large eggs beaten
  • Finely grated Parmesan for sprinkling (quantity to confirm)
  • A small pinch of salt
  • Freshly ground black pepper

Instructions

Caramelise the onions

  • Melt the butter with the olive oil in a large, wide frying pan over a low-medium heat. Add the sliced onions and a small pinch of salt. Cook gently for 35–45 minutes, stirring regularly, until deeply golden, soft and caramelised.

Finish the filling

  • Stir in the red wine vinegar, soft brown sugar, thyme leaves and a generous grinding of black pepper. Cook for another minute or two until the onions are glossy and any excess moisture has evaporated. Transfer to a shallow dish and leave to cool completely.
  • Prepare the oven and trays
  • Preheat the oven to 190°C fan (210°C conventional). Line two large baking trays with baking parchment. Keep the puff pastry refrigerated until you're ready to assemble the twists.

Layer the filling

  • Unroll the first pastry sheet onto its parchment and spread with 1 tsp Dijon mustard, leaving a narrow border. Spoon over half the cooled onion mixture, spreading it into an even layer. Scatter over half the grated mature Cheddar.

Sandwich the pastry

  • Place a second sheet of puff pastry directly on top, then gently press the edges together to enclose the filling.

Cut and twist

  • Using a pizza cutter or sharp knife, cut the pastry sandwich into approximately 12 long strips. Carefully twist each strip two or three times and arrange on the prepared baking trays, leaving enough space for the pastry to puff.

Repeat

  • Repeat with the remaining two pastry sheets, mustard, caramelised onions and Cheddar to make approximately 24 twists in total.

Add the finishing touches

  • Brush the exposed pastry with beaten egg and sprinkle with finely grated Parmesan. If the pastry has softened during assembly, chill the shaped twists for 10–15 minutes before baking.

Bake until golden

  • Bake for approximately 20–25 minutes per batch, until puffed, deeply golden and crisp underneath. Rotate the trays if necessary for even colouring.

Serve

  • Leave the twists to rest on their trays for about 5 minutes before transferring to a serving platter. Serve warm, while the pastry is at its crispiest.

Notes

Take your time with the onions. Slowly caramelising them develops their sweetness. Make sure the mixture isn't too wet, otherwise the pastry can become soggy.
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