Bbq Onion Steaks with Honey-Mustard Sauce
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026
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These honey-mustard BBQ onion steaks offer a sophisticated way to elevate the humble onion from a simple base ingredient to the star of your summer cookout. By slow-grilling thick slices of sweet onion, the natural sugars intensify, creating a tender and smoky centre that pairs beautifully with a sticky, savoury glaze. The combination of sharp Dijon mustard and sweet honey provides a classic flavour profile, perfectly balanced by the herbal notes of fresh summer savoury.
Ideal for plant-based entertaining, these hearty onion steaks are substantial enough to serve as a main course with a crisp wedge salad, or as a vibrant side dish. Using skewers is a clever technique to ensure the onion rounds stay perfectly intact on the barbecue, allowing for even charring and easy flipping. This budget-friendly vegetarian recipe is a fantastic addition to any outdoor gathering, proving that meat-free options can be truly indulgent.
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Ingredients for Bbq Onion Steaks with Honey-Mustard Sauce
60ml olive oil
2 tablespoons (1/4 stick) butter, melted
60ml Dijon mustard
60ml honey
1 tablespoon chopped fresh summer savory
1 1/2 teaspoons Worcestershire sauce
2 large sweet onions (such as Walla Walla, Vidalia, or Maui), peeled, cut horizontally into 1/2-inch-thick slices
How to make Bbq Onion Steaks with Honey-Mustard Sauce
Prepare barbecue (medium-high heat). Whisk oil and butter in small bowl. Whisk mustard and next 3 ingredients in another small bowl.
Run 2 thin metal skewers or soaked bamboo skewers parallel through each onion slice, placing skewers about 1 1/2 inches apart to keep slice intact. Trim ends of bamboo skewers. Brush both sides of onion slices with oil mixture. Place onions on grill and cook until beginning to char, turning and brushing often with oil mixture, about 11 minutes. Brush top side of onions with mustard mixture and cook until mixture begins to bubble, about 2 minutes. Turn onions; brush with mustard mixture and grill until beginning to caramelize, about 1 minute longer. Transfer onions to plate. Brush with mustard mixture.
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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.
Historique de l'article
Les informations contenues dans cette page ont été évaluées par des cliniciens qualifiés.
17 janvier 2026 | Publié à l'origine
Auteur: :
UK recipe editors
Examiné par des pairs
UK recipe editors

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