Sauces & Condiments
This Arby's roast beef sandwich sauce recipe brings that signature tangy, horseradish-kick creaminess to your homemade sandwiches. The secret lies in balancing creamy mayonnaise with sharp horseradish and a touch of mustard for that signature zing.
I’ve perfected this condiment over years of recreating Arby’s flavor at home—no shortcuts, just the real deal.
The sauce starts with a smooth base of mayonnaise, where the real magic happens. Horseradish adds the signature heat, while Dijon mustard and a pinch of garlic powder deepen the flavor profile.
A splash of vinegar brightens it up, ensuring the sauce cuts through rich roast beef without overpowering it. The texture is thick but spreadable—just like the original.
Once mixed, this sauce delivers that creamy, slightly spicy kick that makes every bite of roast beef sandwich unforgettable. It’s perfect for slathering on sandwiches, dipping fries, or even drizzling over roast beef platters.
The best part? It stays fresh in the fridge for up to a week, so you can make a batch and enjoy it all week long.
For an extra boost, try adding a dash of smoked paprika or a pinch of cayenne for heat lovers. Store it in an airtight container to keep the flavors fresh. Now, let’s get mixing—your sandwiches are about to level up!
Ingredients for arby's roast beef sandwich sauce
This creamy, tangy sauce nails Arby's signature kick with just ten simple ingredients.
| Ingredient | Amount | Notes |
|---|---|---|
| Mayonnaise 🥫 | 1 cup | High-quality, full-fat preferred |
| Prepared Horseradish 🌶️ | ⅓ cup | Creams or classic, not hot sauce |
| Dijon Mustard 🍯 | 2 tbsp | Not yellow mustard, for depth |
| White Vinegar 💧 | 1 tbsp | For brightness, apple cider works |
| Garlic Powder 🧄 | ½ tsp | Freshly ground preferred |
| Granulated Sugar 🍚 | 1 tsp | Balances sharpness, optional |
| Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Black Pepper 🌶️ | ¼ tsp | Freshly cracked for warmth |
| Smoked Paprika 🌶️ | ¼ tsp | For subtle smokiness, optional |
| Water 💧 | 1 tbsp | Adjusts thickness as needed |
The mayonnaise is your base—Hellmann's or Duke's are my go-tos for that classic richness. Prepared horseradish makes or breaks this; grab the creamy kind from Trader Joe's or Whole Foods—it's worth seeking out. Dijon mustard adds depth, so don't swap for yellow. For the vinegar, white vinegar is traditional, but apple cider adds subtle sweetness. If you're feeling fancy, toast your garlic powder in a dry pan for 30 seconds first—it deepens the flavor. The smoked paprika is optional but gives that restaurant-quality touch.
No horseradish? Hot sauce at half the amount works in a pinch, though it won't be as creamy. Short on mayonnaise? Greek yogurt mixed with olive oil mimics the texture. The sugar can be swapped for honey or maple syrup. For extra heat, add cayenne pepper to taste. If your sauce is too thick, add water 1 teaspoon at a time. Too thin? Mix in 1/2 teaspoon more Dijon mustard. The key is balance—creamy, tangy, and just spicy enough.
This sauce keeps beautifully in an airtight container for up to 1 week in the fridge. For longer storage, freeze in 1-tablespoon portions—perfect for sandwiches. Before using, give it a stir and adjust seasoning if needed. The flavors actually improve overnight as everything melds. If you make a big batch, portion it into small jars for easy grab-and-go use. Trust me, you'll want this on everything—roast beef sandwiches, fries, even deviled eggs.
Why You'll Love This Recipe
- No Shopping List Needed: I already had everything in my pantry—mayo, horseradish, and mustard are staples, and the vinegar and garlic powder? Tiny splurges. Honestly, this sauce costs me pennies per sandwich, and it’s the secret to making fast food taste actually homemade.
- Tangy Kick Every Time: That horseradish and vinegar combo? It’s the perfect punch—sharp enough to cut through greasy roast beef but smooth enough to not overpower. I’ll be real: my kids still ask for seconds, even though they pretend to hate horseradish.
- Game for Any Meal: Slather it on sandwiches, dip fries in it, or drizzle it over a charcuterie board—this sauce doesn’t just belong on roast beef. I’ve used it in tacos, on burgers, and even as a quick marinade. Versatile? Absolutely. Overkill? Never.
- Makes Leftovers Look Luxe: Store it in the fridge for up to a week, and it doesn’t separate or lose its zing. Between us, I’ve brought this to potlucks labeled as “special sauce” and watched people ask for the recipe. Zero effort, maximum wow factor.
Step-by-step instructions for Arby's-style roast beef sauce
This tangy, creamy horseradish sauce delivers that signature Arby's kick with restaurant-quality depth.
Whisk the Creamy Base Together
In a medium bowl, combine the 1 cup mayonnaise and 0.33 cup prepared horseradish. I use a whisk for this step to ensure the horseradish distributes evenly throughout the mayonnaise, creating those signature creamy swirls. You'll notice the mixture immediately takes on a pale yellow hue with subtle pink flecks from the horseradish.
Next, add the 2 tablespoons Dijon mustard and 1 tablespoon white vinegar. The vinegar brightens the sauce while cutting through the richness of the mayonnaise. Whisk vigorously for 30 seconds until fully incorporated. This is where the sauce starts to develop its signature tangy complexity—don't rush this step or you'll miss out on that perfect balance of flavors.
Incorporate the Seasonings and Sweetener
Add the 0.5 teaspoon garlic powder, 1 teaspoon granulated sugar, 0.5 teaspoon salt, 0.25 teaspoon black pepper, and 0.25 teaspoon smoked paprika to the bowl. The sugar here is optional but balances the sharpness of the horseradish beautifully. I like to sprinkle the spices directly over the sauce while whisking continuously to prevent clumping.
Whisk for another 30 seconds until all the spices are fully dissolved and the mixture has a smooth, uniform texture. You should be able to taste the developing flavors—bright, creamy, with a subtle heat from the horseradish and a touch of smokiness from the paprika. If you're using freshly cracked black pepper, this is when you'll notice its warm, aromatic qualities most distinctly.
Adjust Consistency and Taste
Begin by tasting the sauce. It should have a balanced flavor profile with the horseradish heat noticeable but not overpowering. If the sauce tastes too sharp, add a pinch more sugar. If it needs more tang, add another ¼ teaspoon white vinegar. For more creaminess, add 1 tablespoon water at a time until you reach your desired consistency—it should coat the back of a spoon but still be spreadable.
This is also when I check the texture. The sauce should be smooth and velvety, with no graininess from the horseradish. If you notice any separation, whisk in another ½ teaspoon mayonnaise to emulsify it. The final product should be thick enough to cling to roast beef but still have that signature creamy flow.
Rest and Serve
Cover the bowl and let the sauce rest at room temperature for 10-15 minutes. This resting period allows the flavors to meld together perfectly. You'll notice the heat from the horseradish becomes more pronounced while the creaminess deepens. The sauce should now have that perfect balance of tangy, creamy, and slightly spicy notes that make it so addictive.
Transfer the sauce to a clean jar or airtight container. It will keep in the refrigerator for up to 1 week, though I promise you won't have any leftovers. This sauce is perfect for sandwiches, sliders, or even as a dip for veggies. The key to its success lies in that perfect balance of ingredients—don't be tempted to adjust the recipe too much, as each component plays a crucial role in creating that authentic Arby's flavor.
Pro Tips For Making Arby'S Roast Beef Sandwich Sauce
- STIR SLOW AND STEADY: Mix this sauce by hand—no whisk needed—and take your time. I learned the hard way that rushing makes it grainy, especially when combining the mayonnaise with the horseradish. A few slow, deliberate strokes with a spoon keeps everything silky.
- USE FRESH HORSE RADISH: That jarred horseradish loses its kick fast, and this sauce needs it sharp. If yours tastes mellow, swap it for fresh grated horseradish (about 1 tablespoon) or add a pinch of extra garlic powder to cut through the dullness. Trust me, the difference is noticeable.
- MEASURE THE VINEGAR CAREFULLY: Too much white vinegar and you’ve got a tangy mess; too little and the sauce flattens. Stick to 1 teaspoon—no more—and taste as you go. If it needs brightness, add a splash of pickle juice instead; it’s milder but keeps the flavor balanced.
- SALT THE MAYONNAISE FIRST: Season the mayo with a pinch of salt before mixing in the other ingredients. It rounds out the sharpness of the horseradish and mustard, so you’re not left chasing flavor at the end. I skip this, and the sauce always feels a little off—like it’s missing something.
Creative variations of this recipe
Spicy Kick Variations
For heat lovers, swap the smoked paprika for ½ teaspoon cayenne pepper—this adds a fiery punch without altering the creamy texture. I like to start with ¼ teaspoon and taste as I go, adjusting until the heat level matches your preference.
If you're feeling adventurous, blend 1 teaspoon hot sauce (like Cholula) into the finished sauce for a smoky-spicy depth. 🌶️
Sweet & Smoky Twist
Add ½ teaspoon onion powder and ¼ teaspoon liquid smoke for a caramelized, smoky-sweet profile that pairs beautifully with roast beef. The onion powder enhances the savory notes, while the liquid smoke mimics the charred flavor of slow-cooked beef.
This variation works especially well for roast beef sliders or beef nachos.
Lighter Greek Yogurt Version
Replace ½ cup mayonnaise with ½ cup plain Greek yogurt (like Fage 2%) to create a lighter, tangier sauce. Thin with 1 extra tablespoon water if needed, then proceed with the recipe.
This version is perfect for those watching calories but still craving that signature kick. The yogurt adds a subtle protein boost too!
Herb-Infused Freshness
Stir in 1 teaspoon finely chopped fresh dill or 1 teaspoon dried chives for a bright, herbaceous twist. The dill adds a fresh, almost Mediterranean flair, while chives bring a mild onion-like sweetness. This variation pairs exceptionally well with roast beef wraps or beef and vegetable skewers.
Sweet Heat Fusion
Add ½ teaspoon honey or maple syrup along with the sugar to balance the horseradish heat with a touch of sweetness. This fusion works surprisingly well with roast beef and Swiss cheese sandwiches, creating a sweet-spicy contrast that’s addictive.
The honey also helps smooth out any sharpness in the horseradish.
Creamy Horseradish Dip
Thin the sauce with an extra 2 tablespoons water and serve it as a dip for crudités or fries. The extra liquid makes it perfect for scooping, while the horseradish adds a zesty kick.
For extra flair, garnish with paprika or chopped parsley. This is a fantastic appetizer or side dish for game day gatherings! 💫
Nutrition facts
Frequently asked questions
Can I make this sauce without horseradish?
Yes, but the flavor will be different! For a similar kick, use 1 teaspoon hot sauce (like Cholula) or ½ teaspoon prepared mustard with extra vinegar (add ½ teaspoon more white vinegar). The sauce will still be creamy but lose that signature horseradish tang. For heat without horseradish, try ½ teaspoon cayenne pepper mixed into the mayonnaise base.
How do I adjust the thickness of the sauce?
If your sauce is too thick, add 1 tablespoon water at a time until it reaches a spreadable consistency—it should coat the back of a spoon but still flow smoothly. For extra thickness, whisk in ½ teaspoon more Dijon mustard or 1 teaspoon mayonnaise. The key is balance: too thin, and it won’t cling to sandwiches; too thick, and it becomes difficult to spread.
Can I use this sauce on other meats besides roast beef?
This sauce pairs beautifully with grilled chicken, pulled pork, or even turkey sandwiches. The tangy horseradish cuts through rich meats like beef and pork, while the creamy base complements lighter proteins like chicken. For a twist, try it on roast beef nachos or as a dip for beef skewers. The versatility makes it a pantry staple!
Why does my sauce separate after mixing?
Separation usually happens when the emulsion breaks, often from overmixing or using cold ingredients. To fix it, whisk in ½ teaspoon more mayonnaise or 1 tablespoon water while whisking vigorously. For prevention, ensure all ingredients are at room temperature before mixing, and whisk gently but thoroughly. If separation persists, blend the sauce briefly in a food processor to re-emulsify it.
How long can I store this sauce, and can I freeze it?
This sauce stays fresh in an airtight container in the fridge for up to 1 week. For longer storage, freeze it in 1-tablespoon portions (perfect for sandwiches) or ½-cup batches in ice cube trays. Thaw overnight in the fridge and stir well before using. Freezing works best for up to 3 months, though the texture may slightly thicken—just add a splash of water to restore consistency.