Steak-and-Mushroom Reubens
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 28 Jan 2026
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This steak and mushroom Reuben offers a sophisticated, high-protein twist on the classic New York deli sandwich. By swapping traditional corned beef for lean, pan-seared flank steak and earthy shiitake mushrooms, this recipe provides a satisfying depth of flavour while remaining surprisingly light. The combination of peppery steak, fermented sauerkraut and nutty Gruyère cheese creates a complex savoury profile that is perfectly balanced by the sweet tang of Thousand Island dressing and the crunch of toasted rye bread.
Ideal for a nutritious weekend lunch or a quick midweek dinner, these toasted sandwiches are a fantastic way to enjoy a high-quality protein meal that feels truly indulgent. The addition of shiitake mushrooms adds a wonderful meaty texture, making the portions go further while adding essential nutrients. Serve them warm from the pan while the cheese is perfectly melted for the ultimate homemade deli experience.
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Ingredients for Steak-and-Mushroom Reubens
1 tablespoon olive oil
3 teaspoons coarsely ground pickling spice
30g flank steak
12 large fresh shiitake mushrooms, stemmed
12 slices deli rye bread with seeds
35g fat-free Thousand Island dressing
230g drained sauerkraut from jar
170g thinly sliced Gruyère cheese
Nonstick olive oil spray
How to make Steak-and-Mushroom Reubens
Back to contentsHeat oil in large nonstick skillet over medium-high heat. Sprinkle 1 1/2 teaspoons pickling spice on each side of steak, then sprinkle both sides with salt and pepper. Add steak to skillet and cook to medium rare, about 4 minutes per side. Transfer to cutting board. Add mushrooms to same skillet. Cover and cook until mushrooms are tender, turning occasionally, about 3 minutes. Transfer mushrooms to bowl.
Thinly slice steak on diagonal. Arrange 6 bread slices on work surface. Spread with dressing. Layer each with steak, 2 mushroom caps, sauerkraut, and cheese. Top with remaining bread slices.
Spray 2 large nonstick skillets with nonstick spray. Add sandwiches to skillets; place over medium heat. Cover and cook until bottoms are golden, about 3 minutes. Remove skillets from heat. Remove sandwiches. Spray skillets with nonstick spray. Turn sandwiches over into skillets. Cover and cook until bottoms are golden and cheese is melted, 2 to 3 minutes.
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.
28 Jan 2026 | Originally published
Authored by:
UK recipe editors
Peer reviewed by
UK recipe editors

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