Sink your teeth into a Steak Sandwich with Horseradish Sauce and prepare for one of the most satisfying bites you’ll ever have! Imagine tender, juicy steak, grilled to perfection, tucked into a toasted baguette, and slathered with a creamy, zippy horseradish sauce that wakes up your senses. Each layer offers a beautiful contrast: rich beef, tangy sauce, sweet onions, fresh greens, and crusty bread. This hearty sandwich feels like pure comfort, but trust me, it has the kind of wow-factor you’ll want to show off. Whether it’s a weeknight dinner or a treat for friends, the Steak Sandwich with Horseradish Sauce never disappoints.

Steak Sandwich with Horseradish Sauce Recipe - Recipe Image

Ingredients You’ll Need

The joy of making a Steak Sandwich with Horseradish Sauce lies in its simplicity — each ingredient truly earns its place, with flavors and textures that work in harmony. From the boldness of the horseradish to the fresh crunch of arugula, there’s nothing extra here: just essentials for a sandwich worth savoring.

Steak (Ribeye, Sirloin, or Flank): Pick a cut you love for tenderness and juicy flavor; slice thinly for ultimate sandwich enjoyment.
Fresh Baguette or Ciabatta: The perfect foundation, sturdy enough to hold all those juicy fillings and soak up the sauce.
Prepared Horseradish: This is the secret weapon in the sauce, lending heat and brightness that instantly wakes up the sandwich.
Mayonnaise: Creates the creamy base for the horseradish sauce — go full-fat for richness!
Dijon Mustard: Adds zip and acidity to balance the creamy elements of the sauce.
Fresh Lemon Juice: A squeeze brings everything together with a little tang and freshness.
Salt and Pepper: Essential for seasoning both the steak and the sauce; don’t skimp.
Red Onion (sliced and optionally caramelized): Adds sweet depth and subtle crunch to every bite.
Fresh Arugula or Baby Spinach: Lends a peppery note and a beautiful green finish to the sandwich.
Olive Oil or Butter: For searing the steak and toasting the bread to golden perfection.

How to Make Steak Sandwich with Horseradish Sauce

Step 1: Prepare the Horseradish Sauce

In a small bowl, whisk together mayonnaise, prepared horseradish, Dijon mustard, fresh lemon juice, a pinch of salt, and a crack of black pepper. Taste and adjust the horseradish to your liking — go bold if you love a spicy kick! Set the sauce aside, letting the flavors mingle while you prepare the rest of the sandwich.

Step 2: Season and Sear the Steak

Pat your steak dry with paper towels and season both sides generously with salt and pepper. Heat olive oil or butter in a skillet over medium-high heat until shimmering. Add the steak, cooking to your desired doneness (medium-rare is always a hit for sandwiches). Let the steak rest for a few minutes off the heat, then slice thinly against the grain for maximum tenderness.

Step 3: Toast the Bread

Cut your baguette or ciabatta in half lengthwise, then toast it in the skillet or under a broiler until golden and crisp. A little olive oil or butter brushed on the cut sides adds delightful flavor and helps prevent sogginess when you build your Steak Sandwich with Horseradish Sauce.

Step 4: Caramelize the Onions (Optional)

If you’re a fan of sweeter flavors, sauté your sliced onions slowly in a bit of olive oil over low heat until deep golden and soft, about 10–15 minutes. If you prefer crunch and sharpness, simply use raw onions, thinly sliced.

Step 5: Assemble the Steak Sandwich with Horseradish Sauce

Now the magic happens! Spread a generous layer of horseradish sauce onto the toasted bread. Pile on the sliced steak, top with onions (caramelized or raw), and add a handful of fresh arugula or spinach. Cap it with the bread lid and press gently. Slice and serve immediately, while the sandwich is warm and the flavors are fresh.

How to Serve Steak Sandwich with Horseradish Sauce

Garnishes

Go for a sprinkle of flaky sea salt, a few extra cracks of black pepper, or even a handful of chopped fresh parsley for color and a fresh finish. For a little extra oomph, drizzle a touch more horseradish sauce on top or add some thinly sliced pickles to really make the flavors pop.

Side Dishes

Pair your Steak Sandwich with Horseradish Sauce with crispy baked fries, a vibrant side salad of mixed greens, or some tangy coleslaw. Roasted veggies or a classic potato salad work beautifully, rounding out the meal without upstaging the main event.

Creative Ways to Present

Try slicing the sandwich into mini portions for party platters or game day snacks. Stack halves at different angles for a show-stopping presentation, or serve open-faced for a modern twist that shows off the gorgeous layers. For a more indulgent approach, add slices of melty provolone or Swiss cheese and quickly broil before serving.

Make Ahead and Storage

Storing Leftovers

Keep leftover Steak Sandwich with Horseradish Sauce components separate if possible. Store the steak and onions in airtight containers in the fridge for up to three days. Save any extra horseradish sauce in a jar or covered bowl. It’s best to assemble sandwiches fresh to maintain crisp bread and vibrant greens.

Freezing

While the horseradish sauce doesn’t freeze well, the steak itself does! Slice and freeze any extra cooked steak in an airtight container for up to two months. When ready to use, thaw overnight in the fridge and gently reheat. Avoid freezing assembled sandwiches, as the bread and greens won’t hold their texture.

Reheating

Warm leftover steak slices gently in a hot skillet or microwave with a damp paper towel to prevent drying out. Toast fresh bread, if possible, before assembling with your cold or room temperature sauce and greens. This keeps your Steak Sandwich with Horseradish Sauce tasting just-made every time.

FAQs

What type of steak is best for a Steak Sandwich with Horseradish Sauce?

Ribeye and sirloin are classic choices thanks to their tenderness and flavor, but flank steak offers great value and taste if sliced thinly. The key is choosing a cut that cooks quickly and stays juicy.

Can I use store-bought horseradish sauce instead?

Absolutely! While homemade sauce gives you control over the flavor, a high-quality store-bought horseradish sauce works in a pinch. Just taste it first to decide if you want to add a little extra lemon or mustard.

Is it necessary to caramelize the onions?

Not at all! Caramelized onions add sweetness and a deep savory note, but raw onions bring crunch and sharpness. Pick whichever suits your mood or go half and half for extra dimension.

How spicy does the horseradish sauce get?

The horseradish sauce can be as mild or fiery as you like. Start with the recipe amount, then add more horseradish gradually until it reaches your preferred level — just remember it gets stronger as it sits!

Can I make Steak Sandwich with Horseradish Sauce ahead for a party?

Yes! Prep all the components a day in advance: steak, horseradish sauce, and onions. Store everything separately, then assemble and toast just before serving so your sandwiches stay crisp and fresh.

Final Thoughts

If you’re looking to impress or simply treat yourself, you can’t go wrong with a Steak Sandwich with Horseradish Sauce. It’s the kind of recipe you’ll want to make again and again — and once you do, don’t be surprised if it becomes a go-to favorite for every craving and celebration!

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July 26, 2025 at 10:52 pm

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Steak Sandwich with Horseradish Sauce Recipe