Crispy Filo King Prawns with Sweet Chilli Dip

King prawns wrapped in strips of filo pastry and fried until the pastry shatters, leaving the prawn inside just cooked and juicy. They look impressive, they take about half an hour, and the technique is much simpler than it appears — you are essentially bandaging a prawn.

The taste is clean and sweet from the prawn with a salty, buttery crunch from the pastry, and the dipping sauce does the rest of the work. Difficulty is low to moderate; the only real skill is not overcooking them. This is our home version of the crispy filo king prawns in The Starter Squad XL at The Cozy Bowl.

Why This Recipe Works

• Filo gives a shatter that batter cannot. Because the pastry is already almost dry, it crisps in seconds and stays crisp for far longer than a wet batter, which begins softening the moment it leaves the oil.
• The tail is left exposed. It gives you a handle, it looks good, and it means the pastry does not have to stretch around an awkward shape.
• Prawns are patted bone dry before wrapping. Wet prawns steam inside the pastry and push it off. Dry prawns let the filo grip.
• The frying time is deliberately short. Two to three minutes at 180°C browns the pastry and cooks the prawn simultaneously. Any longer and the prawn tightens into rubber.
• A single strip of filo, brushed lightly, is enough. Two or three layers looks generous but the inner layers stay pale and doughy. One well-wrapped strip crisps all the way through.

Ingredient Notes

King prawns. Raw, shelled and deveined, tails left on. Frozen raw king prawns are usually better value than fresh and are almost always previously frozen anyway. Defrost them fully in the fridge and then dry them very thoroughly. Do not use cooked prawns — they will be overdone before the pastry colours.

Filo pastry. Chilled or frozen filo, thawed. Keep the stack covered with a damp tea towel while you work, because exposed filo goes brittle and unusable within a few minutes. Two large sheets will wrap seven prawns comfortably.

Melted butter or oil for brushing. Butter tastes better and browns more attractively. Oil is more forgiving and slightly crisper. Either is fine; brush sparingly, as a soaked strip goes greasy.

Seasoning for the prawns. Just salt, white pepper and a little garlic granules. The prawn is the point, so keep it restrained.

Frying oil. Sunflower, vegetable or groundnut oil. You need enough for the prawns to float freely, around 5 cm depth in a deep pan.

Sweet chilli dipping sauce. Shop-bought is completely fine, and a squeeze of lime plus a little chopped coriander lifts it considerably.

Substitutions and Variations

Air fryer. Brush the wrapped prawns generously with oil and air-fry at 200°C for 7 to 8 minutes, turning once. Slightly less shattery than deep-fried but very good and much less faff.

Oven baked. Brush well with butter and bake at 210°C on a wire rack over a tray for 12 to 14 minutes. The pastry browns properly on a rack; on a flat tray the underside stays pale.

Spring roll pastry instead of filo. Gives a smoother, bubblier, more takeaway-style crust. Cut into 4 cm strips and use the same method.

Add a flavour layer. A tiny smear of garlic butter, sriracha or chilli jam on the prawn before wrapping works well. Keep it to about a quarter teaspoon so the pastry does not go soggy.

Chicken version. Strips of chicken breast about the size of a prawn, wrapped the same way, need 5 to 6 minutes in the oil at a slightly lower 170°C. Check they are cooked through before serving.

Different dips. Garlic mayonnaise, a soy and rice vinegar dip, or a squeeze of lime with sea salt.

We have not tested vegetarian, vegan or gluten-free versions of this recipe, so we cannot describe any variation as suitable for those diets.

Step-by-Step Guidance

The card has the full method. These are the details that make the difference.

Drying the prawns

This is the most important step and the one people skip. Lay the defrosted prawns on kitchen paper, press another sheet on top, and leave them for five minutes. Then pat them again. They should feel tacky, not slippery. Any surface water will turn to steam inside the pastry and blow it loose in the fryer.

Cutting and handling the filo

Unroll the filo, cut the stack into strips about 5 cm wide, then immediately cover everything you are not using with a damp tea towel. Filo dries out shockingly fast. Work with one strip at a time and brush it very lightly with melted butter — a thin sheen, not a coating.

Wrapping

Lay the prawn diagonally at one end of the strip with the tail sticking out past the edge. Fold the corner over the body, then roll the prawn along the strip at a slight angle so the pastry spirals up the body like a bandage, overlapping each turn by about half. Leave the tail free. Press the end down firmly — the residual butter will seal it. If it will not stick, dab a little water on it.

Frying

Heat the oil to 180°C. Without a thermometer, drop in a small piece of filo: it should sizzle enthusiastically and turn golden in about 15 seconds. Fry three or four prawns at a time, holding them by the tail and lowering them in away from you. Two to three minutes is all they need — the pastry should be a deep golden and the prawn will have curled slightly. Lift them onto a wire rack, not kitchen paper, so the underside stays crisp. Salt them lightly the moment they come out.

Professional Tips

• Wrap them all before you heat the oil. Frying demands your full attention, and half-wrapped prawns will dry out while you are distracted.
• Use a wire rack, never kitchen paper. Paper traps steam against the base and softens it. A rack lets air circulate all round.
• Salt immediately out of the oil. Hot fat on the surface grips the salt. Thirty seconds later it just bounces off.
• Keep the oil temperature up. Adding too many at once drops the temperature and gives you pale, greasy pastry. Let it recover between batches.
• Do not cover them. A lid or foil over a plate of these will steam them soft within two minutes. Leave them open on the rack.
• They can be held for a few minutes in a low oven. 120°C with the door slightly ajar, on the rack, for up to ten minutes if you are frying in batches.

Troubleshooting

Problem	Likely cause	Solution	Prevention
Pastry unravels in the oil	End not pressed down, or prawn was wet	Hold the seam against the pan base for the first 10 seconds	Dry the prawns thoroughly and press the final flap firmly
Prawn tough and rubbery	Fried too long, or cooked prawns used	None	Raw prawns, 2 to 3 minutes at 180°C, no more
Pastry pale and greasy	Oil not hot enough or pan overloaded	Return to hotter oil for 30 seconds	180°C, three or four at a time, let the oil recover between batches
Pastry very dark, prawn underdone	Oil too hot	Finish in a 200°C oven for 2 minutes	Keep the oil at 180°C and check with a thermometer or a filo scrap
Filo cracks while wrapping	Left uncovered and dried out	Use two overlapping pieces	Keep the stack under a damp tea towel at all times
Soggy within minutes	Drained on kitchen paper or covered	Crisp again in a hot oven for 3 minutes	Drain on a wire rack, uncovered
Greasy, heavy pastry	Brushed with too much butter	Blot lightly	A thin sheen of butter, not a coating

Serving Suggestions

These belong on a sharing platter. Put them out with Demon and Angel chicken wings, crispy onion rings and Naga chilli potatoes and you have essentially rebuilt the Starter Squad at home. A couple of sticky beef bao buns alongside makes it a full meal.

They also work as a starter before something brothy — our simple chicken ramen is a good follow-on because the clean broth does not compete. To drink, something citrusy cuts the fried richness: an alcohol-free mojito. Browse more in bao and starters.

Storage and Reheating

• Best eaten immediately. This is genuinely a cook-and-eat dish; the crunch is 80 per cent of the appeal and it fades with every hour.
• Leftovers. Refrigerate in a sealed container. Reheat on a wire rack in a 200°C oven or an air fryer for 4 to 5 minutes. Never microwave them.
• Wrapped but unfried. You can wrap the prawns up to 4 hours ahead. Keep them on a tray in the fridge, uncovered or very loosely covered so the pastry does not sweat.
• Freezing. Wrapped raw prawns freeze well on a tray, then bagged once solid. Fry from frozen at 170°C for 4 to 5 minutes. Do not refreeze prawns that were previously frozen and thawed.
• Frying oil. Cool, strain and reuse once or twice for other savoury frying. It will smell of prawn, so do not use it for anything sweet.

Cool leftovers within two hours, refrigerate and reheat until piping hot throughout. We have not carried out shelf-life testing on this recipe, so please use your own judgement.

Frequently Asked Questions

Can I use cooked prawns?

We would not recommend it. Cooked prawns will be overcooked and rubbery by the time the pastry is golden. Raw is the only way to get a juicy prawn inside a crisp shell.

How do I stop the filo drying out?

Keep the whole stack under a damp tea towel and only lift out the strip you are using. Filo can go from pliable to shattering in about three minutes in a warm kitchen.

Do I need a thermometer?

It helps a great deal, but a scrap of filo dropped in the oil is a decent test. It should sizzle briskly and go golden in around 15 seconds. If it browns instantly the oil is too hot; if it just sits there, wait.

Can I make these in an air fryer?

Yes. Brush them generously with oil and cook at 200°C for 7 to 8 minutes, turning once. They are a touch less shattery than deep-fried but still excellent.

Why leave the tail on?

It gives you something to hold while wrapping, lowering into the oil and eating, and it makes them look far better on the plate. The pastry also has an easier shape to grip.

How many per person?

Three or four as part of a sharing platter, six or seven as a starter on their own. This recipe makes seven, matching the menu portion.

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Fry a Batch for the Table

These disappear faster than anything else we make, so double the quantity if more than two of you are eating. And if you want them without standing over a pan of hot oil, they come as part of the sharing platters when you order from The Cozy Bowl in Luton.