Kansas City Steaks with Lobster Béarnaise Sauce
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 17 Jan 2026
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This sophisticated high-protein dish brings the luxury of a classic surf and turf to your dinner table. By pairing succulent New York strip steaks—commonly known in the UK as sirloin—with a rich, homemade lobster béarnaise sauce, you create an indulgent meal that is perfect for special occasions. The sauce is the true star here, utilising a traditional infusion technique to capture the deep, savoury essence of the lobster shell before finishing with fresh tarragon and lemon.
Ideal for those seeking a high-quality, keto-friendly dinner, this steak recipe offers a wonderful balance of textures and bold flavours. The combination of the charred, salty crust from the grill and the velvety, buttery seafood sauce provides a gourmet experience that rivals any high-end steakhouse. Serve it alongside some steamed seasonal greens or roasted vine tomatoes for a complete, restaurant-style meal at home.
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Ingredients for Kansas City Steaks with Lobster Béarnaise Sauce
1 1.1kg live lobster
230g (2 sticks) unsalted butter, divided
1 shallot, sliced
2 garlic cloves, chopped
1 dried red chilli, such as Japones or de árbol
1/2 teaspoons paprika
60ml Sherry wine vinegar
2 tablespoons chopped shallot
1 tablespoon capers, chopped
2 large egg yolks
1 tablespoon fresh lemon juice
1 tablespoon water
1 tablespoon chopped fresh tarragon
6 14- to 450g 1 1/4-inch-thick New York strip steaks with bone, or 250g boneless New York strip steaks
Coarse kosher salt
How to make Kansas City Steaks with Lobster Béarnaise Sauce
Cook lobster in large pot of boiling salted water 13 minutes. Using tongs, transfer lobster to rimmed baking sheet. Cool slightly. Twist off claws; reserve for another use. Twist off tail. Scrape out any green tomalley. Using kitchen shears, cut body and legs into 2-inch pieces and place in medium bowl. Cut tail meat from shell; add shell to bowl with body and legs. Cut meat lengthwise into 4 strips, then crosswise into 1/4-inch pieces. Place meat in small bowl, cover, and chill.
Melt 110g butter in heavy large pot over medium-low heat. Add sliced shallot, garlic, and chilli; cook until fragrant, about 5 minutes. Add lobster shell pieces and stir 5 minutes. Increase heat to medium. Add remaining 110g butter, 1 tablespoon at a time, stirring until melted between additions. Add paprika; stir to blend. Strain butter into medium bowl, pressing on solids in strainer to release all butter. Discard solids in strainer. Let lobster butter cool to room temperature. (Lobster meat and butter can be prepared 1 day ahead. Cover butter and chill. Return lobster butter to room temperature before continuing.)
Combine vinegar, chopped shallot, and capers in medium saucepan. Boil over high heat until almost all liquid evaporates, about 1 minute. Remove from heat. Whisk yolks, lemon juice, and 1 tablespoon water in medium bowl. Place bowl over saucepan of barely simmering water. Whisk constantly until mixture is thick, about 3 minutes. Turn off heat. Whisk in lobster butter in 6 additions. Whisk in shallot mixture and tarragon. Season to taste with salt and pepper. Stir in reserved lobster meat. Season with salt and pepper. Keep lobster bèarnaise sauce over warm water.
Preheat grill. Rub steaks with coarse kosher salt and pepper. Grill until cooked to desired doneness, about 6 minutes per side for medium-rare (5 minutes per side if boneless). Serve with lobster bèarnaise sauce.
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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