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Grilled Jumbo Prawns with Lemon and Oregano

These grilled jumbo prawns with lemon and oregano offer a sophisticated yet simple way to enjoy fresh seafood. By grilling the prawns in their shells, the meat stays incredibly succulent and absorbs the aromatics of the bright, herb-infused dressing. The addition of charred lemon wedges brings a wonderful depth of flavour, elevating this dish into a stunning centrepiece for any summer gathering or alfresco dinner party.

As a diabetes-friendly main course, this recipe prioritises heart-healthy fats from olive oil and lean protein from the prawns. It is naturally low in carbohydrates and bursting with fresh Mediterranean notes. Serve these prawns alongside a crisp green salad or some roasted Mediterranean vegetables for a light, nutritious meal that feels truly indulgent without compromising on health goals.

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Ingredients for Grilled Jumbo Prawns with Lemon and Oregano

  • 1.4kg jumbo prawns in shell (7 or 8 per pound)

  • 4 large garlic cloves

  • 3/4 teaspoons salt

  • 5 tablespoons fresh lemon juice

  • 1/2 teaspoons black pepper

  • 180ml olive oil

  • 60ml finely chopped fresh oregano (from 1 bunch)

  • 3 lemons, each cut into 6 wedges

How to make Grilled Jumbo Prawns with Lemon and Oregano

Snip through shells of prawns along middle of back using kitchen shears, exposing vein and leaving tail and adjoining segment of shell intact. Devein prawns, leaving shells in place.

Mince and mash garlic to a paste with salt using a large heavy knife or a mortar and pestle. Transfer to a blender along with lemon juice and pepper and blend until smooth. With motor running, add oil in a slow stream, blending until emulsified. Transfer dressing to a bowl and stir in chopped oregano.

Prepare grill for cooking over direct heat with medium-hot charcoal (moderate heat for gas).

Toss prawns with 60ml dressing in a large bowl and marinate no more than 15 minutes. (Texture of prawns will change if marinated too long.)

Lightly brush lemon wedges with some of remaining dressing and grill, turning over once, until grill marks appear, 3 to 5 minutes. Transfer to a large platter.

Grill prawns on lightly oiled grill rack (covered only if using a gas grill), turning over once, until just cooked through, 7 to 8 minutes total. Transfer to platter with lemons as grilled. Serve with remaining dressing.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 17 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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