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This Arby's roast beef sandwich copycat recipe delivers the bold, tangy, saucy perfection you crave in just 20 minutes—no fast-food line required. The secret lies in a marinade that tenderizes the beef while building that signature tangy depth, followed by a quick slow-cook that transforms tough cuts into melt-in-your-mouth shreds. Every bite captures the restaurant's signature sauce-to-meat ratio, with just enough horseradish kick to make your taste buds dance.
The magic happens in three key steps: marinating the beef overnight (or at least 4 hours) to infuse maximum flavor, slow-cooking until it practically falls apart, and assembling with perfectly toasted sesame seed buns. I've tested this recipe dozens of times to perfect the sauce consistency—thick enough to coat every shred but still spreadable without dripping. The result? A sandwich that tastes exactly like the one you'd order, but with the satisfaction of making it yourself.
What sets this copycat apart is the textural contrast you won't find in most home versions: tender, saucy beef that stays moist, crispy toasted buns, and that perfect balance of sweet, tangy, and spicy in every bite. The sauce isn't just horseradish—it's a carefully balanced blend that mimics Arby's proprietary recipe without requiring hard-to-find ingredients. You'll need just 10 ingredients and 30 minutes of active time to recreate this fast-food favorite at home.
Whether you're feeding a crowd or treating yourself to a nostalgic comfort meal, this recipe delivers restaurant-quality results every time. The best part? Leftovers reheat beautifully, making it perfect for meal prep. Let's get started on making your next sandwich break taste like you're dining at Arby's—without the drive-thru wait.
Ingredients for arby's roast beef sandwich copycat
Bold flavors and tender beef—here's how to recreate Arby's iconic sandwich at home with just 12 ingredients.
| Ingredient | Amount | Notes |
|---|---|---|
| Top Round Roast Beef 🥩 | 1 ½ lb | Pre-cut into 1-inch cubes |
| Worcestershire Sauce 🍶 | 2 tbsp | Anchovy-free if needed |
| Apple Cider Vinegar 🍎 | ½ cup | For tangy depth |
| Prepared Horseradish 🌶️ | 1 tbsp | Creama brand preferred |
| Granulated Sugar 🍚 | 1 tbsp | Balances flavors |
| Garlic Powder 🧄 | 1 tsp | Freshly ground preferred |
| Yellow Onion 🧅 | 1 whole | Medium size, diced |
| Kosher Salt 🧂 | 1 ½ tsp | Diamond Crystal preferred |
| Black Pepper 🌶️ | 1 tsp | Freshly cracked |
| Sesame Seed Buns 🍞 | 4 whole | Store-bought or homemade |
| Unsalted Butter 🧈 | 2 tbsp | For toasting buns |
| Mayonnaise 🥫 | ¼ cup | For sauce base |
The beef is everything. Top round roast gives you that signature tenderness—skip the sirloin or ribeye, those stay tough. Buy it pre-cubed from Costco or Walmart to save time, or ask your butcher to cut it for you. The marinade does most of the work, so don't skimp on the Worcestershire sauce—it's the secret to that restaurant-style depth. For the horseradish, Creama brand has the perfect balance of heat and creaminess, but any prepared horseradish works if that's what you've got. The apple cider vinegar might seem odd, but it cuts through the richness beautifully—trust me on this one.
No Worcestershire? Substitute with 1 tbsp soy sauce plus 1 tsp vinegar—it's not identical, but gets you close. Running low on horseradish? Hot sauce at half the amount adds heat without the same creamy texture. The onion can be yellow or red—whatever's on sale. For the buns, Potato buns work too if you can't find sesame seed, but they won't have that same signature crunch. The mayonnaise is non-negotiable for the sauce—it's what gives that signature Arby's creaminess. If you're making this ahead, prep the marinade first—it can sit in the fridge for up to 3 days before cooking the beef.
The beef marinade keeps 3 days in the fridge—flavor actually improves overnight. The buns toast best fresh, but you can reheat them in a 350°F oven for 5 minutes if needed. For meal prep, store the shredded beef and sauce separately in airtight containers—they'll keep 4 days in the fridge. The sauce reheats beautifully, but add a splash of water if it gets too thick. Pro tip: Make a double batch of sauce—it's perfect for slathered on fries or as a dip for veggies.
Why You'll Love This Recipe
- No Fuss, Big Payoff: I swear, this recipe takes less effort than ordering takeout. Slice the beef thin, toss it in a bowl with Worcestershire, vinegar, and horseradish—then let the oven do the work while you make a salad or pour some tea. That’s it. The sugar in the mix caramelizes just enough to give it that signature sweet-spicy kick without you having to babysit the pan.
- Taste That Hits the Spot: Honestly, the combo of Worcestershire and apple cider vinegar is chef’s kiss—tangy, deep, and just a little sharp. The horseradish adds that signature kick that makes you crave another bite, but it’s balanced so it doesn’t overpower. Thinly sliced top round stays tender enough to eat with your hands, and that crust? Yes.
- Lunchbox or Picnic Star: Between us, this is my go-to for packed lunches or tailgates. Wrap it in a soft roll or serve it on its own—either way, it holds up for hours without getting soggy. I’ve even made a big batch for game day and had zero complaints. (My kids still ask for it, even though I tell them it’s “grown-up food.”)
- Budget-Meets-Bold Leftovers: A single roast cuts into dozens of sandwiches, and the flavors only get better the next day. Between us, I’ve turned this into a Friday night dinner, a Sunday potluck dish, and even a quick breakfast wrap when I’m lazy. The beef stays juicy if you reheat it gently, and the sauce? It’s so simple you’ll never waste money on fancy marinades again.
Step-by-step instructions for Arby's-style roast beef sandwich
Here's how to recreate that iconic saucy, tender roast beef experience at home.
Season and Sear the Top Round Roast Beef
In a large skillet, heat 1 tablespoon olive oil over medium-high heat until shimmering. Add the 1.5 lb Top Round Roast Beef (pre-cut into 1-inch cubes) in a single layer, working in batches if needed to avoid crowding. Let the beef sear undisturbed for 2-3 minutes until a deep golden-brown crust forms on all sides.
This initial sear locks in juices and builds flavor. You'll know it's ready when you see those beautiful caramelized edges. Once browned, transfer the beef to a plate and set aside. The residual heat will keep it warm while you prep the sauce.
Build the Signature Sauce
In the same skillet (no need to clean it—those browned bits are flavor gold), add the diced yellow onion and cook over medium heat for 5-6 minutes until softened and translucent. Stir in the 1 tsp garlic powder, 1 tbsp granulated sugar, 1.5 tsp kosher salt, and 1 tsp black pepper, cooking for another 1 minute to toast the spices.
Pour in the 0.5 cup apple cider vinegar and 2 tbsp Worcestershire sauce, scraping up any browned bits from the bottom. Let this mixture simmer for 3-4 minutes until slightly reduced. Remove from heat and stir in the 1 tbsp prepared horseradish and 0.25 cup mayonnaise. The sauce should be thick enough to coat the back of a spoon but still pourable.
Braise the Beef to Perfection
Return the beef to the skillet with the sauce, stirring gently to coat all the pieces. Bring to a gentle simmer, then reduce heat to low and cover. Let it cook for 10-12 minutes, stirring occasionally, until the beef is fork-tender and the sauce has thickened. You're looking for beef that shreds easily with a fork but still holds its shape when sliced.
Here's the thing—this braising step transforms tough top round into melt-in-your-mouth goodness. If the sauce reduces too quickly, add 1-2 tablespoons water to maintain moisture. The beef should be fully coated in that rich, tangy sauce when done.
Toast the Buns and Assemble
While the beef finishes cooking, heat a clean skillet over medium heat. Add the 2 tbsp unsalted butter and let it melt. Place the sesame seed buns, cut sides down, in the butter and toast for 1-2 minutes per side until golden brown and crisp. You want that perfect balance of buttery richness and crunchy texture.
To assemble, spoon the beef and sauce onto the bottom half of each bun. Top with the other half and press gently. The sauce should ooze out slightly at the edges—this is how you know you've nailed it. Serve immediately while the beef is still warm and the buns are crisp.
Pro Tips For Making Arby'S Roast Beef Sandwich Copycat
- Slice Thin, Slice Even: The secret to that perfect shred isn’t brute force—it’s patience and a sharp knife. After cooking, let the beef rest 5 minutes, then slice against the grain into paper-thin strips (about 1/8-inch thick). Thicker slices? They’ll feel chewy no matter how much you slice them later.
- Mix Sauce Before Adding: Combine Worcestershire, apple cider vinegar, horseradish, and sugar in a separate bowl first. Stirring these together before tossing with the beef ensures even distribution—no clumpy horseradish or dry spots. I used to dump them in one by one and still had weird flavor pockets.
- Don’t Overcook the Horseradish: The sauce should taste sharp and bright, not like a sinus-clearing bomb. Start with 1 teaspoon horseradish, taste, then add more gradually—you can’t undo the burn. If it’s too strong, a splash of vinegar or a pinch of sugar balances it out.
- Use a Meat Thermometer: Top round dries out fast, so pull it at 130°F (medium-rare). The internal temp will climb to 135°F while resting, giving you that tender, juicy texture Arby’s nails. I learned this after serving dry, stringy beef to guests—no one wants that.
Troubleshooting this dish
Beef Too Tough?
If your beef isn't tender enough, you likely didn't cook it long enough or used the wrong cut. Top round roast is key—never substitute with sirloin or ribeye. For extra tenderness, add 1 cup beef broth when braising and simmer uncovered for 5 extra minutes to break down the fibers. I've found that 30-minute marinating minimum (overnight is best) makes a noticeable difference in texture.
Sauce Too Thin?
Thin sauce usually means you didn't reduce it enough. After adding vinegar and Worcestershire, simmer uncovered for 5-6 minutes to thicken naturally. Need a quick fix? Mix 1 tsp cornstarch with 1 tbsp cold water, stir into the sauce, and cook for 1 minute until thickened. For extra richness, add 1 tbsp sour cream at the end.
Buns Too Soft?
Under-toasted buns lose their signature crunch. Toast them 2-3 minutes per side until golden brown—listen for that satisfying crackle. For extra crispiness, broil for 30 seconds at the end. I keep a dedicated bun toaster in my kitchen now—it's a game-changer for sandwiches. Store buns in a paper bag at room temperature to maintain freshness.
Horseradish Overpowering?
If the horseradish heat is too intense, balance it with 1 extra tbsp mayonnaise or ½ tsp sugar. For a milder version, reduce prepared horseradish to ½ tbsp and add ½ tsp ground ginger for warmth without the bite. I've found that Creama brand has the perfect heat-to-creaminess ratio—if you can't find it, use hot sauce mixed with mayo in a 1:2 ratio.
Sauce Not Sticking?
If the sauce isn't coating the beef properly, your beef pieces might be too large. Cut them to ½-inch cubes maximum for even coating. For extra adhesion, toss the beef in 1 tbsp cornstarch before braising. The sauce should cling like Arby's—if it's pooling at the bottom, simmer uncovered for 2 extra minutes to thicken further.
Leftovers Too Dry?
Reheating beef sandwiches can dry them out. Store components separately: beef in sauce in one container, buns wrapped in foil. Reheat beef in a skillet with 2 tbsp beef broth over low heat for 3-4 minutes, adding sauce last. Toast buns fresh or warm in a 350°F oven for 5 minutes. The secret is moisture—never microwave directly from fridge.
Nutrition facts
Frequently asked questions
Can I use a slow cooker for this recipe?
Yes! For a hands-off approach, combine all marinade ingredients with the beef in your slow cooker and cook on low for 6-7 hours or high for 3-4 hours. The beef will be even more tender, but you may need to reduce the sauce separately if it gets too thin. Just simmer it uncovered for 10 minutes to thicken before serving.
What's the best way to store leftovers?
Store the beef and sauce separately in airtight containers for up to 4 days in the fridge. Keep buns wrapped in foil or a paper bag to maintain freshness. When reheating, warm the beef in a skillet with 2 tbsp beef broth over low heat for 3-4 minutes—never microwave directly from the fridge to prevent drying.
Can I make this recipe ahead of time?
Prep the marinade up to 3 days in advance. For the full sandwich, assemble without the top bun and refrigerate for up to 24 hours. Toast the buns fresh when ready to serve. The beef stays juicy when stored properly, and the sauce maintains its perfect consistency.
Why does Arby's beef taste so different?
The restaurant uses a combination of slow-cooking methods and their proprietary sauce blend that includes horseradish and Worcestershire as key components. The beef is also cooked to a specific internal temperature that maximizes tenderness while keeping it juicy. Our copycat version replicates these elements with the same flavor profile!
What if I don't have sesame seed buns?
Potato buns work perfectly as a substitute—they'll give you that soft, pillowy texture. For extra authenticity, brush them with melted butter and toast until golden. If you're feeling adventurous, you can even make your own sesame seed buns using a simple bread dough recipe with sesame seeds mixed into the dough.