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Grilled Mustard Chicken with Fresh Corn Polenta

This grilled mustard chicken with fresh corn polenta is a sophisticated yet comforting high-protein dish that makes the most of vibrant, seasonal flavours. The chicken thighs are uniquely prepared by tucking a punchy Dijon and spring onion marinade under the skin, ensuring the meat stays incredibly succulent while the exterior achieves a perfectly charred, golden finish on the grill. It is a fantastic choice for those looking for a nutritious, filling meal that feels special enough for weekend entertaining.

To balance the heat of the mustard, the chicken is served over a bed of luxuriously creamy polenta. By incorporating fresh corn kernels and Italian mascarpone, the polenta gains a lovely sweetness and a velvety texture that complements the savoury chicken beautifully. This gluten-free meal is both heart-healthy and packed with protein, offering a refined twist on traditional barbecue fare that the whole family will enjoy.

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Ingredients for Grilled Mustard Chicken with Fresh Corn Polenta

  • 6 spring onions, finely chopped

  • 60ml Dijon mustard

  • 1 tablespoon fresh lemon juice

  • 1 large garlic clove, pressed

  • 6 large chicken thighs with skin and bones

  • Olive oil

  • 1200ml water

  • 240ml polenta (coarse cornmeal)

  • 1 1/2 teaspoons coarse kosher salt

  • 1 teaspoon sugar

  • 400g fresh corn kernels (cut from about 3 large ears)

  • 60g mascarpone cheese

  • Polenta is sold at some supermarkets and at natural foods stores and Italian markets. If unavailable, substitute an equal amount of regular yellow cornmeal and cook about half as long. Mascarpone is an Italian cream cheese that's available at many supermarkets and at Italian markets.

  • Small metal turkey-lacing pins

Whisk onions, mustard, lemon juice, and garlic in medium bowl to blend. Using fingertips and leaving 1 side still attached, loosen skin on each chicken thigh. Lift skin flap on each and fold back. Spoon half of mustard seasoning atop thighs, dividing equally; spread to cover meat. Fold skin flap over to enclose seasoning and secure skin with metal pin. Sprinkle thighs with salt and pepper on both sides. Turn thighs, skin side up, and spread remaining mustard seasoning over skin. Transfer to small baking sheet. DO AHEAD: Chicken can be prepared 6 hours ahead. Cover and refrigerate.

Prepare barbecue (medium-high heat). Preheat oven to 121°C. Brush grill rack generously with olive oil grill chicken until golden brown and cooked through, turning chicken occasionally and moving to cooler spot on grill if browning too quickly, 40 to 50 minutes. Transfer grilled chicken to another baking sheet; keep warm in oven while preparing polenta.

Bring 1200ml water to boil in heavy large saucepan over high heat. Gradually whisk in polenta, then 1 1/2 teaspoons coarse salt and sugar. Reduce heat to medium-low; simmer until polenta is tender, thick, and creamy, whisking often and adjusting heat to maintain gentle simmer, 25 to 30 minutes. Add corn kernels and cook, stirring constantly, until corn is tender, about 5 minutes. Mix in mascarpone cheese. Season polenta to taste with salt and pepper.

Spoon polenta onto each of 6 plates. Top with grilled chicken and serve.

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.

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UK recipe editors

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UK recipe editors

Article history

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

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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