Sauces & Condiments
This Arby's Super Roast Beef Sauce recipe delivers that iconic tangy-sweet-spicy flavor you crave with every crispy tortilla crown. The secret lies in balancing creamy onion base with sharp horseradish and a touch of heat—just like the real deal.
I've recreated it after years of perfecting the ratio, so you get that signature smoothness without the mystery ingredients.
The sauce starts with a rich onion foundation, where caramelized onions build depth before blending with ketchup, vinegar, and spices. What makes it special is the horseradish—just enough to give that signature kick without overpowering.
The sauce needs to be pourable but still cling to every bite of your sandwich or fries, which is where the corn syrup comes in to balance the tang.
What you'll end up with is a velvety, slightly thick sauce that's tangy, just sweet enough, and has that unmistakable horseradish bite. It's the kind of sauce that transforms ordinary meals into something nostalgic and crave-worthy.
The consistency is perfect for dipping, drizzling, or even using as a marinade for meats.
This recipe makes enough for a week's worth of dipping—trust me, it disappears fast. The best part? You can adjust the heat level to your preference by adding more or less horseradish. Let's get started on recreating that iconic Arby's flavor at home.
Ingredients for arby's super roast beef sauce
Nine simple ingredients for that iconic Arby's sauce—creamy, tangy, and just spicy enough.
| Ingredient | Amount | Notes |
|---|---|---|
| Yellow Onions 🧅 | 2 large | Caramelized for depth |
| Ketchup 🍅 | 1 cup | High-quality, no artificial flavors |
| White Vinegar 💧 | ½ cup | Distilled for tang |
| Corn Syrup 🍯 | ¼ cup | Light corn syrup preferred |
| Prepared Horseradish 🌶️ | 2 tbsp | Freshly grated for heat |
| Ground Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Ground Cloves 🌿 | ¼ tsp | Whole cloves ground fresh |
| Ground Allspice 🌶️ | ¼ tsp | For warmth and depth |
| Salt 🧂 | 1 ½ tsp | Kosher or sea salt |
| Water 💧 | ½ cup | For thinning consistency |
The onions are non-negotiable here. Yellow onions work best for caramelizing—red onions get too bitter. Trader Joe's has the best pre-sliced yellow onions for quick prep, but if you're going whole, slice them thinly for faster cooking. Don't skip the caramelization—this builds the sauce's depth. For extra flavor, add a pinch of sugar while caramelizing. The ketchup should be a good-quality brand like Heinz—none of that watery stuff. And grab the distilled white vinegar from the baking aisle, not the cheap stuff.
No horseradish? Hot sauce at half the amount gets you close, but you'll lose that signature bite. The corn syrup is key for balancing the tang—don't substitute with honey or maple syrup. The spices are where the magic happens: whole cloves and allspice ground fresh make all the difference. No grinder? Penzeys sells pre-ground spices that are way better than the grocery store basics. The sauce should be pourable but still cling—if it's too thick, add water one tablespoon at a time. Too thin? Simmer uncovered for 5 minutes to thicken naturally.
This sauce keeps beautifully. Pour into a clean jar, seal, and it'll last 3 weeks in the fridge. For longer storage, freeze in ice cube trays—just thaw and stir. I always make double batches because it disappears fast. The best part? It tastes even better the next day as all the flavors meld together. Perfect for dipping, drizzling, or even using as a marinade for meats. Just don't tell anyone it's homemade—they'll never believe it!
Why You'll Love This Recipe
- Pantry Magic: I swear by this sauce because it’s all pantry staples—no specialty trips, no last-minute panic. The onions caramelize while you stir in the ketchup and vinegar, and boom, you’ve got that signature tangy-sweet balance without hunting for obscure ingredients.
- Horseradish Kick: Between us, that prepared horseradish is the MVP. It’s not overpowering—just a sharp little punch that cuts through the sweetness and makes every bite feel special. (Yes, even on a Tuesday night.)
- Sauce for Everything: Slather it on roast beef sandwiches, drizzle it over fries, or mix it into meatloaf—this stuff doesn’t quit. I keep a jar in the fridge for weeks because it turns even basic meals into something worth sharing.
- Budget Game-Changer: A single batch costs pennies and stretches forever. The corn syrup keeps it glossy and shelf-stable, so you’re not scrambling for last-minute condiments. Plus, it’s way cheaper than buying that fancy sauce in a bottle.
Step-by-step instructions for Arby's super roast beef sauce
Here's how to recreate that iconic sweet, tangy, and slightly spicy sauce that makes Arby's sandwiches legendary.
Caramelize the Yellow Onions for Depth
Peel and slice the 2 large yellow onions into thin half-moons. Heat a large skillet over medium-low heat and add the onions without any oil—their natural moisture will release as they cook. Let them cook undisturbed for 15 minutes, stirring occasionally, until they turn a deep golden brown color. This slow caramelization builds the rich, sweet base of the sauce.
You'll know they're ready when they smell sweet and almost jammy. If they start to stick, add just a splash of the 0.5 cup water to loosen them. Don't rush this step—patient caramelization is what gives the sauce its signature depth. Once fully caramelized, transfer the onions to a bowl and set aside.
Build the Sauce Base with Ketchup and Vinegar
Return the same skillet to the stove over medium heat. Add the 1 cup ketchup and 0.5 cup white vinegar to the skillet, scraping up any browned bits from the bottom. Bring the mixture to a gentle simmer and let it cook for 5 minutes, stirring occasionally, until it thickens slightly and the raw vinegar smell dissipates.
This combination creates the perfect balance of sweetness from the ketchup and tang from the vinegar. The vinegar also helps cut through the richness of the onions. If the mixture starts to bubble too vigorously, reduce the heat slightly to prevent splattering.
Sweeten and Spice the Sauce
Stir in the 0.25 cup corn syrup, 2 tbsp prepared horseradish, 0.5 tsp ground black pepper, 0.25 tsp ground cloves, 0.25 tsp ground allspice, and 1.5 tsp salt. Increase the heat to medium-high and bring the mixture to a boil. Let it boil vigorously for 3-4 minutes, stirring constantly, until it thickens to a glossy consistency.
The corn syrup adds that signature sweetness, while the horseradish brings the signature kick. The cloves and allspice contribute warm, earthy notes that round out the flavor. The sauce should coat the back of a spoon and hold its shape when drizzled. If it's too thick, add a splash of the reserved caramelized onions to thin it slightly.
Combine and Simmer for Perfect Consistency
Return the caramelized onions to the skillet and stir to combine with the sauce. Let the mixture simmer for another 2-3 minutes until everything is fully integrated and heated through. Taste and adjust the seasoning—you may want to add a bit more salt or horseradish to match your preference for heat.
The sauce should be thick enough to cling to roast beef but still have a glossy sheen. If it's too thick, add a splash of the 0.5 cup water to reach the perfect consistency. Let it cool slightly before serving—this allows the flavors to meld even more. This sauce is best when served warm over crispy roast beef sandwiches or as a dipping sauce for fries.
Rest and Serve for Maximum Flavor
Transfer the sauce to a clean jar or bowl and let it rest for at least 10 minutes before serving. This resting period allows the flavors to fully develop and the sauce to reach its ideal consistency. The sauce will thicken slightly as it cools, so you may want to add a splash of water if it becomes too thick after resting.
Serve the sauce warm over crispy roast beef sandwiches or use it as a dipping sauce for fries. The perfect balance of sweet, tangy, and spicy flavors will transport you straight to an Arby's restaurant. Store any leftovers in the refrigerator for up to 1 week or freeze for up to 3 months.
Pro Tips For Making Arby'S Super Roast Beef Sauce
- Cook Onions Low and Slow: This sauce isn’t about flashy caramelization—it’s about softening those onions until they’re nearly invisible. Simmer them on medium-low for at least 10-12 minutes, stirring occasionally, or they’ll burn before they break down. Trust me, you’ll taste the difference when they melt into the sauce instead of sitting as chewy chunks.
- Measure Vinegar Precisely: The white vinegar is what cuts through the sweetness, but too much turns this into a sad, tangy glaze. Use exactly 1 tablespoon—no eyeballing. I learned this after making a batch that tasted like a salad dressing gone wrong.
- Whisk in Horseradish Last: Add that prepared horseradish right at the end, right when the sauce is off the heat. Stir it in just until combined—any longer, and it’ll turn the whole thing into a mouth-puckering science experiment. You want heat, not a chemical burn.
- Simmer Until Thickened: Don’t rush the final simmer. Let the sauce reduce for 5-7 minutes after everything’s mixed in, or it’ll taste thin and watery. You’re aiming for a coatable consistency, not soup—keep an eye on it and stir occasionally to avoid sticking.
Troubleshooting this recipe
Too Tangy?
If your sauce tastes overly sharp, you likely used too much white vinegar or didn't caramelize the onions long enough. Reduce the vinegar by 1 tablespoon and simmer the sauce for 2-3 extra minutes to let flavors meld.
A splash of corn syrup (just 1 teaspoon) can also help balance the acidity. 💛
Not Spicy Enough?
The horseradish is key here—if it's missing its kick, add ½ teaspoon more or swap in ½ teaspoon of hot sauce (like Crystal or Tabasco). For a deeper heat, toast ¼ teaspoon of cayenne pepper in the skillet before adding the sauce base.
Let it rest 15 minutes before tasting—heat builds as it cools.
Sauce Too Thin?
If your sauce is runny, simmer it uncovered for 5-7 minutes to evaporate excess liquid. For a quicker fix, stir in ½ teaspoon of cornstarch mixed with 1 teaspoon water and cook for 1 more minute. Avoid over-thickening—it should still coat a spoon but remain pourable. 🔥
Grainy Texture?
This usually means the onions weren't cooked long enough or the sauce wasn't blended smoothly. For future batches, blend the caramelized onions with 2 tablespoons water before adding to the sauce.
If it's already made, strain through a fine-mesh sieve to remove any chunks. Stir in 1 teaspoon of ketchup to help bind the texture.
Flavor Fading Fast?
Store the sauce in an airtight glass jar in the fridge, where it lasts 3 weeks. For longer shelf life, freeze in ice cube trays—thaw and stir before use. To revive stale sauce, reheat gently with 1 teaspoon of vinegar and ½ teaspoon of horseradish to restore brightness.
Never reheat directly from the fridge—let it sit at room temperature for 5 minutes first.
Clumpy or Separated?
This happens when the corn syrup or spices aren't fully incorporated. Whisk vigorously while reheating, then strain through a fine-mesh sieve to remove any lumps. For prevention, whisk the sauce constantly while simmering.
If it's still grainy, blend with an immersion blender for 10 seconds to achieve a smooth consistency. ✨
Nutrition facts
Frequently asked questions
Can I make this sauce without horseradish?
Yes, but you'll lose that signature kick! For a substitute, use ½ teaspoon of hot sauce (like Crystal or Tabasco) or ¼ teaspoon of prepared mustard per batch. The horseradish gives the sauce its signature sharpness, so if you're sensitive to spice, start with just 1 tablespoon instead of 2 tablespoons.
How do I adjust the heat level?
Add more prepared horseradish for extra heat or reduce it for a milder flavor. For a deeper kick, toast ¼ teaspoon of cayenne pepper in the skillet before adding the sauce base. If you prefer warmth instead of heat, increase the ground cloves or allspice by ⅛ teaspoon each.
Can I use this sauce on other foods besides roast beef?
This versatile sauce works perfectly on burgers, fries, chicken wings, or even as a marinade for meats like pork chops. The tangy-sweet-spicy balance makes it great for dipping or drizzling. For a unique twist, try it on grilled vegetables or as a glaze for roasted potatoes.
Why does my sauce taste different from Arby's?
Every homemade batch will have slight variations due to ingredient quality and cooking techniques. The key is balancing the caramelized onions, vinegar, and horseradish. If it's too sweet, reduce the corn syrup by 1 teaspoon. If it's too tangy, simmer longer to let flavors meld. Taste as you go and adjust gradually!
Can I make this sauce in a slow cooker?
Yes! Cook the caramelized onions as directed, then transfer everything to a slow cooker on low heat for 1-2 hours, stirring occasionally. This method is great for hands-off cooking. If the sauce gets too thick, add water 1 tablespoon at a time until it reaches the perfect consistency.