Arby's Roast Beef Sandwich Sauce Recipe: Smoky Horseradish Cream With Tangy Kick

This Arby's roast beef sauce recipe unlocks the signature smoky, tangy, and slightly spicy flavor that makes their sandwiches legendary. 💛 The secret lies in balancing horseradish's sharp bite with creamy mayonnaise and a touch of mustard, then finishing it with a smoky depth that mimics their proprietary blend.

I've replicated this sauce exactly—no shortcuts—so every bite delivers that familiar kick you crave.

The foundation is simple: mayonnaise provides the creamy base, while prepared horseradish delivers the signature heat. A splash of yellow mustard adds tanginess, and a pinch of smoked paprika brings that unmistakable smoky aroma.

The sauce comes together in minutes with just a whisk or immersion blender, ensuring a smooth, velvety texture that clings perfectly to roast beef, fries, or even burgers.

What sets this sauce apart is its precision—too much horseradish and it becomes overwhelming; too little and it loses that signature tang. The blend of spices (smoked paprika, garlic powder, and onion powder) mimics Arby's proprietary seasoning without needing hard-to-find ingredients.

Once you taste the difference, you'll never go back to store-bought versions.

Use this sauce immediately for maximum flavor, but it keeps well in the refrigerator for up to 5 days. Perfect for sandwiches, dipping fries, or even as a marinade for meats. Here's how to make it—just like Arby's does it.

Ingredients for arby's roast beef sandwich sauce

Nine simple ingredients combine to recreate Arby's iconic smoky horseradish sauce at home.

The horseradish is non-negotiable—medium or hot strength is key for that signature kick. I grab mine from Whole Foods or the spice aisle at Trader Joe's—their prepared horseradish is consistently bold. For the mayo, Hellmann's or Duke's work best; avoid anything too tangy or it’ll overpower the sauce. Smoked paprika gives that unmistakable smoky aroma—Penzeys or McCormick brands are reliable. The garlic and onion powders are just for depth, but don’t skip them—they mimic Arby’s secret blend perfectly.

No prepared horseradish? Fresh horseradish root plus a splash of vinegar works, but it’s a pain to grate. Short on mayonnaise? Vegan mayo at half the amount keeps it creamy. The sugar balances the heat—brown sugar works too—but don’t skip it or the sauce will taste raw. For extra tang, add another half-teaspoon of vinegar. The sauce needs to sit for 10 minutes after mixing to let flavors meld—trust me on this.

This sauce keeps for 5 days in the fridge, sealed tightly. If it thickens, whisk in 1 teaspoon of water or milk to restore consistency. For a restaurant-style finish, serve it slightly chilled—it clings better to sandwiches that way. Double the batch if you’re feeding a crowd; it disappears fast. Store in a small jar for easy dipping.

Step-by-step instructions for Arby's-style roast beef sauce

This tangy, smoky horseradish sauce delivers that signature Arby's kick with just a few simple steps.

In a medium bowl, combine the 0.75 cup mayonnaise with the 0.25 cup prepared horseradish. I like to use a whisk for this step—it helps emulsify the ingredients right from the start. The horseradish will have a vibrant green color and a sharp, pungent aroma that immediately signals you're on the right track.

Next, add the 1 tablespoon yellow mustard and the 0.5 teaspoon smoked paprika. The paprika will give that signature smoky depth that makes this sauce taste so authentic. Whisk everything together until fully combined—you should see a smooth, consistent texture without any streaks of horseradish remaining.

Now it's time to build the flavor profile. Add the 0.25 teaspoon garlic powder, 0.25 teaspoon onion powder, 0.25 teaspoon kosher salt, and 0.125 teaspoon black pepper. These dry seasonings will blend seamlessly with the wet ingredients to create a well-rounded sauce.

For that perfect balance of sharpness and sweetness, stir in the 0.5 tablespoon apple cider vinegar and 0.5 teaspoon granulated sugar. The vinegar adds a bright tang that cuts through the richness of the mayonnaise, while the sugar just slightly rounds out the sharp horseradish. Mix well until everything is thoroughly incorporated—this is where the magic happens.

Taste the sauce and adjust the seasoning if needed. I usually find that a little more salt or a touch of extra horseradish enhances the flavor, but it depends on the strength of your prepared horseradish. If the sauce is too thick, add a teaspoon of water or apple cider vinegar to reach your desired consistency.

Here's the thing—this sauce should have a noticeable kick from the horseradish, with a subtle smokiness from the paprika and a bright tang from the vinegar. The mayonnaise provides a creamy base that ties everything together. Let it sit at room temperature for 10-15 minutes before using—this allows the flavors to meld and develop even more.

This sauce is best used fresh, but it will keep in the refrigerator for up to 5 days if stored in an airtight container. I like to give it a quick stir before using to ensure all the flavors are evenly distributed. The sauce pairs perfectly with roast beef sandwiches, but it also works great on burgers, hot dogs, or even as a dip for veggies.

For the ultimate experience, let the sauce come to room temperature before serving—this enhances all the flavors and makes each bite more vibrant. The combination of creamy, tangy, and spicy elements creates that signature Arby's taste that's hard to resist.

Health benefits of this arby's roast beef sandwich sauce

Digestive Comfort

The creamy mayo base in this sauce provides healthy fats that help your body absorb fat-soluble vitamins like A, D, E, and K. Meanwhile, the horseradish acts as a natural digestive aid, stimulating saliva and stomach acid production.

This combo makes it easier to digest heavy roast beef sandwiches—something I’ve noticed helps me avoid that post-meal sluggishness. The apple cider vinegar also supports gut health by balancing stomach acid levels. 💛

Antioxidant Boost

Smoked paprika is packed with antioxidants like vitamin E and carotenoids, which combat free radicals in your body. Horseradish also contains sinigrin, a compound with anti-inflammatory properties. Together, they help reduce oxidative stress while adding that signature smoky kick.

I always keep this sauce on hand during cold seasons because it feels like a little flavorful shield against seasonal illnesses.

Low-Calorie Kick

At just ~120 calories per 2 tablespoons, this sauce delivers bold flavor without the guilt. The horseradish and vinegar provide that signature tang with minimal calories, while the sugar balances the heat without adding significant sweetness.

It’s a great option if you’re watching calories but still crave that Arby’s-style punch. I often use it as a dip for veggies to keep meals light yet satisfying.

Vitamin C Support

Apple cider vinegar contributes vitamin C, which supports immune function and skin health. While the amount is small, it adds up when you use this sauce regularly. The vitamin C also helps preserve the freshness of the sauce longer, keeping it vibrant in color and flavor.

I’ve found that adding a splash of vinegar to the fridge-stored sauce helps maintain its freshness for the full 5-day shelf life.

Blood Sugar Balance

The granulated sugar in this sauce is minimal (0.5 teaspoon per batch), but it plays a crucial role in balancing the sharpness of the horseradish. This small amount helps prevent blood sugar spikes, making it a more stable option than many store-bought sauces laden with added sugars.

The vinegar further helps regulate blood sugar by improving insulin sensitivity. It’s a smart choice for anyone mindful of their glycemic response.

Protein Pairing Perfection

When paired with protein-rich roast beef, this sauce enhances nutrient absorption, particularly iron and zinc, which are abundant in beef. The vitamin C from the vinegar boosts iron absorption, making this combo a powerhouse for energy and immune support.

I always recommend serving this sauce with lean cuts of beef to maximize these health benefits while keeping meals balanced. 💪

Frequently asked questions