Arby’s Roast Beef Recipe: Slow-Roasted for Thinly Sliced Sandwich Magic

I’ve perfected a recipe that brings Arby’s roast beef magic to your home kitchen. 🔥 The secret lies in precise temperature control and a special slicing technique that ensures thinly sliced perfection every time.

This roast beef recipe delivers tender, juicy results with that signature deli flavor. With simple ingredients and oven-ready instructions, you’ll achieve restaurant-quality roast beef in under 3 hours. Let’s make it!

Ingredients for Arby’s Roast Beef

Simple, quality ingredients make this Arby’s roast beef shine in your kitchen.

[recipe_ingredient_scaler]

For the best roast beef, choose top round or eye round roast. Look for prime or choice grade at Whole Foods or your local butcher. The precise cut matters for that signature thin-slicing. If you can’t find top round, ask your butcher for recommendations.

No au jus mix? Make your own with beef broth, Worcestershire, and dried thyme. For an extra kick, add grated horseradish to the au jus. If you prefer a different cut, top sirloin works too, though it may be slightly less tender. The key is low and slow cooking at 200°F.

This roast beef keeps beautifully—slice thinly and store in an airtight container. Refrigerate for up to 5 days or freeze for 3 months. Reheat gently in the au jus to maintain moisture. For best results, slice against the grain using a sharp carving knife or electric slicer.

Step-by-Step Instructions for Arby’s Roast Beef Recipe

Master the art of thinly sliced roast beef with these precise, professional steps.

🔥 Step 1: Season the Top Round Roast

Preheat your oven to 300°F. In a small bowl, mix together the 2 tbsp Kosher Salt, 1 tbsp Black Pepper, 1 tsp Garlic Powder, 1 tsp Onion Powder, and 0.5 tsp Paprika. Rub this spice blend all over the 2.5 lb Top Round Roast, making sure to coat it evenly. The seasoning should adhere to the meat, creating a flavorful crust.

Let the seasoned roast sit at room temperature for 30 minutes before cooking. This step is crucial for even cooking, as it allows the meat to relax and cook more consistently throughout.

🔥 Step 2: Sear and Roast to Perfection

Heat 2 tbsp Olive Oil in a large oven-safe skillet over high heat. Sear the seasoned roast for 2-3 minutes per side until it’s browned on all sides. This initial sear locks in the juices and creates a rich, caramelized crust.

Transfer the skillet to the preheated oven and roast the beef for 2-3 hours, or until it reaches your desired level of doneness. Use a meat thermometer to check for internal temperatures: 130-135°F for medium-rare, 140-145°F for medium. The roast is done when it reaches your target temperature.

⏰ Step 3: Rest and Slice Thinly

Remove the roast from the oven and let it rest on a cutting board for 20-30 minutes. During this time, the juices will redistribute throughout the meat, ensuring a tender and juicy final product. Tent the roast loosely with foil to keep it warm.

Once rested, slice the roast beef against the grain into thin slices. Use a sharp knife and apply gentle pressure to achieve smooth, even cuts. The slices should be so thin they almost fall apart.

🥘 Step 4: Prepare Au Jus for Serving

While the roast rests, prepare the Au Jus according to the package instructions using 1 cup Beef Broth and 2 tbsp Worcestershire Sauce. Bring the mixture to a simmer and cook until it’s heated through and slightly reduced. This savory gravy will complement the roast beef perfectly.

For an extra kick, stir in the 1 tbsp Fresh Horseradish just before serving. The horseradish adds a pungent flavor that pairs beautifully with the rich roast beef.

Pro Cooking Tips for Perfect Results

Temperature Control Mastery

The key to perfect Arby’s-style roast beef is maintaining precise temperature control throughout cooking. I preheat my oven to 300°F and use an instant-read thermometer to monitor the roast’s internal temperature. For medium-rare, I aim for 130-135°F. 🔥

Proper Searing Technique

A good sear creates that signature crust. I heat 2 tbsp Olive Oil in an oven-safe skillet over high heat and sear the seasoned roast for 2-3 minutes per side. This initial sear locks in juices and creates a rich, caramelized crust that enhances the overall flavor.

The Importance of Resting

After roasting, I let the beef rest for 20-30 minutes on a cutting board, tented loosely with foil. This resting period allows juices to redistribute throughout the meat, ensuring a tender and juicy final product. The resting time is crucial for achieving that perfect texture.

Slicing Against the Grain

To achieve Arby’s signature thin slices, I slice the rested roast beef against the grain using a sharp carving knife. I apply gentle pressure to make smooth, even cuts. For the thinnest slices, I often use an electric slicer. The key is maintaining consistent, thin slices that are tender and easy to chew.

Au Jus Preparation

I prepare the Au Jus according to package instructions using 1 cup Beef Broth and 2 tbsp Worcestershire Sauce. For an extra kick, I stir in 1 tbsp Fresh Horseradish just before serving. This savory gravy complements the roast beef perfectly and adds depth to the dish.

Final Touches

To serve, I place the thinly sliced roast beef on a bun or with your choice of sides. The au jus is served on the side for dipping, allowing you to enjoy the full flavor of the roast beef. I like to add a sprinkle of fresh herbs for a pop of color and freshness.