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Bloomin Onion Sauce is the creamy, tangy, horseradish-spiked dip that turns any fried appetizer into a steakhouse moment, and I cracked the Outback copy the first time the girls begged for a blooming onion on a lazy Friday night. One whisk and three minutes later, Maddie was double-dipping before I could grab a photo. It tastes just like the restaurant, and it is the same dip we reach for with our crispy onion petals.
If you love big, bold appetizer flavor with almost zero effort, this is about to become the most-requested condiment in your fridge.
Bloomin Onion Sauce Quick Look
- 🕒 Prep Time: 3 minutes
- 🌡️ Cook Time: 0 minutes
- ⏳ Total Time: 3 minutes
- 🍽️ Serving: 1 cup
- ⚡ Calories: 927kcal
- 🌶️ Flavor Profile: Creamy and tangy with a zippy horseradish kick (mild heat)
- ✋ Difficulty: Easy, no cooking required, on par with stirring together our hot spinach artichoke dip
Quick Answer
Bloomin Onion Sauce is a creamy dipping sauce made by whisking together mayonnaise, sour cream, ketchup, prepared horseradish, garlic, and a blend of smoked paprika, cayenne, salt, and pepper. It takes about three minutes to stir together, needs no cooking, and tastes just like the dip served alongside an Outback Steakhouse Bloomin Onion. Chill it for at least 30 minutes so the flavors meld before serving.
Jump to:
- Bloomin Onion Sauce Quick Look
- Quick Answer
- Why This Recipe Works
- Why You’ll Love This Recipe
- Key Ingredients
- Variations and Substitutions
- How to Make Bloomin Onion Sauce
- Recipe Tips & Tricks
- Serving Ideas and Suggestions
- Bloomin Onion Sauce FAQs
- Other Recommended Copycat Appetizer Recipes
- Copycat Outback Bloomin Onion Sauce
Why This Recipe Works
Click to see the technique science
- Horseradish is the secret. Prepared horseradish gives the sauce its signature sinus-tingling zip without raw bite, which is exactly what sets the Outback version apart from a plain fry sauce.
- A mayo-and-sour-cream base. Using both mayonnaise and sour cream balances richness with tang, so the dip is creamy but never heavy or greasy.
- Smoked paprika builds color and depth. A little smoked paprika gives that warm peachy-orange color and a subtle smokiness that makes it taste restaurant-made.
- It is make-ahead friendly. Resting in the fridge lets the garlic and spices bloom, so the flavor actually improves after 30 minutes, and overnight is even better.
- No cooking, no fail. There is nothing to heat, reduce, or emulsify, so it comes together perfectly every single time.
- You control the heat. A pinch of cayenne adds gentle warmth you can dial up or down, keeping it kid-friendly or spicy on demand.
Why You’ll Love This Recipe
- It tastes exactly like the dip from a steakhouse blooming onion, for a fraction of the price.
- Everything gets whisked in one bowl in about three minutes, with no cooking required.
- It is endlessly versatile, perfect for onion petals, fries, burgers, and our crispy baked chicken tenders.
Key Ingredients
Here is what makes this copycat sauce taste just like the restaurant. Each ingredient pulls real weight, so do not skip the horseradish or the smoked paprika.
- Mayonnaise: The creamy backbone of the sauce. Use a good full-fat mayo for the richest, smoothest texture.
- Sour Cream: Adds tang and lightens the mayo so the dip is creamy without feeling heavy.
- Ketchup: Just enough for a touch of sweetness and that signature peachy color.
- Prepared Horseradish: The star. It delivers the zippy, sinus-clearing kick that makes this taste like Outback.
- Smoked Paprika and Cayenne: Smoked paprika brings warm color and depth while a pinch of cayenne adds gentle heat you control.
See recipe card for exact quantities.
Variations and Substitutions
This sauce is a blank canvas. Here are easy ways to make it your own.
- Make it spicier: Double the cayenne or add a squirt of sriracha for a fiery dipping sauce.
- Make it sweeter: Stir in an extra teaspoon of ketchup or a drizzle of honey for a kid-friendly version.
- Add extra zip: A teaspoon of Dijon mustard or a splash of pickle juice brings even more tang.
- Lighten it up: Swap in light mayo and reduced-fat sour cream, or use plain Greek yogurt in place of the sour cream.
- For garlic lovers: Add a second clove of minced garlic, or use roasted garlic for a mellow, sweet depth like the garlic in our hot spinach artichoke dip.
How to Make Bloomin Onion Sauce
- In a medium bowl, add the mayonnaise, sour cream, ketchup, prepared horseradish, minced garlic, kosher salt, black pepper, smoked paprika, and a pinch of cayenne pepper.
- Whisk everything together until completely smooth, then cover and refrigerate for at least 30 minutes so the flavors meld. Give it one more stir and serve.
Recipe Tips & Tricks
- Chill before serving. Resting the sauce for at least 30 minutes lets the horseradish and garlic mellow and meld, and it tastes even better the next day.
- Use prepared horseradish, not horseradish sauce. Prepared horseradish from the refrigerated section gives the real kick; creamy horseradish sauce is milder and sweeter.
- Mince the garlic finely or grate it on a microplane so you never bite into a raw chunk.
- Taste and adjust after chilling. Add more horseradish for zip, more ketchup for sweetness, or more cayenne for heat.
- Full-fat is best. Light mayo and sour cream work, but full-fat gives the creamiest, most restaurant-like texture.
- Make it ahead. This sauce keeps for up to a week, so stir it together before a party and pull it out when you need it.
Serving Ideas and Suggestions
This is, of course, the perfect partner for a homemade blooming onion or a batch of our crispy onion petals. The cool, creamy dip against hot, crunchy fried onion is the whole reason this sauce exists, and one bowl never seems to be enough.
Do not stop at onions, though. It is incredible with french fries, sweet potato fries, onion rings, mozzarella sticks, and our copycat Pizza Hut cheese sticks. It also doubles as a burger spread, a dip for baked chicken tenders, or a sauce for grilled steak like our grilled barbeque sirloin.
For a full steakhouse-at-home spread, serve it alongside Alice Springs chicken and a pile of air fryer baked potatoes. Set out the bowl with toothpicks and watch it disappear before the main course even hits the table.
Bloomin Onion Sauce FAQs
Yes, this is a spot-on copycat of the creamy, horseradish-spiked sauce Outback Steakhouse serves with their blooming onion. The mayo, horseradish, and smoked paprika combination nails that signature restaurant flavor at home for a fraction of the cost.
Stored in an airtight container, the sauce keeps for up to one week in the refrigerator. The flavor actually deepens after a day, so it is a great make-ahead dip. Do not freeze it, as the mayo and sour cream base will separate when thawed.
You can, but horseradish is what gives it the signature kick, and without it the sauce becomes a mild fry sauce. For a substitute, try a teaspoon of Dijon mustard plus a small pinch of wasabi to mimic the heat.
It has a gentle warmth from the horseradish and cayenne, more zippy than fiery. It is mild enough for most kids as written, and you can leave out the cayenne for an even milder dip or double it for real heat.
So much. It is delicious with fries, onion rings, mozzarella sticks, chicken tenders, and raw veggies. It also works beautifully as a burger or sandwich spread and a sauce for grilled steak and chicken.
Absolutely, and you should. Whisk it together up to a few days in advance and keep it covered in the fridge. The resting time lets the garlic and spices bloom, giving you the best flavor right when guests arrive.
Looking for more steakhouse favorites at home? Try our Alice Springs chicken next.
Set out our crunchy ranch snack mix alongside this dip for the perfect appetizer table.
Serve these with a platter of our cheddar bacon ranch cream cheese pinwheels for a full appetizer spread.
Love an easy homemade dip? Whisk up this creamy spicy sriracha mayo next.
Round out your appetizer spread with our pub style beer cheese dip.
Copycat Outback Bloomin Onion Sauce
Ingredients
- 1/2 cup mayonnaise
- 1/4 cup sour cream
- 2 tablespoons ketchup
- 2 tablespoons prepared horseradish
- 1 clove garlic minced
- 1/2 teaspoon kosher salt
- 1/4 teaspoon black pepper
- 1/4 teaspoon smoked paprika
- pinch cayenne pepper
Instructions
- Make the sauce first by whisking together the mayonnaise, sour cream, ketchup, horseradish, garlic, salt, pepper, paprika, and cayenne until smooth.1/2 cup mayonnaise, 1/4 cup sour cream, 2 tablespoons ketchup, 2 tablespoons prepared horseradish, 1 clove garlic minced, 1/2 teaspoon kosher salt, 1/4 teaspoon black pepper, 1/4 teaspoon smoked paprika, pinch cayenne pepper
- Cover with plastic wrap and place in the fridge until serving.
Notes
- For the best part, let the sauce sit in the refrigerator in an airtight container overnight; it allows the flavors to meld.
- Always start with less cayenne pepper and add more to taste to avoid making the sauce too spicy.
- Using a whisk in a small bowl ensures a smooth, creamy sauce without lumps.
- If you’re serving this with a bloomin’ onion, cut the onion a day ahead for the best results.
- Double or triple the recipe for larger gatherings; it’s sure to be a hit with any fried food.
- Experiment with additional spices like smoked paprika or garlic powder to take this blooming onion sauce to the next level.
Nutrition
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