Outback Bloomin Onion Sauce Recipe

This Outback Bloomin’ Onion sauce tastes just like the iconic restaurant dip. It's creamy, tangy, and perfectly spicy from a quick mix of mayo, sour cream, ketchup, horseradish, and bold seasonings. And it’s not just for a Bloomin’ Onion. It’s unreal with fries, chicken tenders, burgers, sandwiches, and anything crispy you need a killer dipping sauce for.

Why You'll Love This Bloomin Onion Sauce Recipe

The best part about this sauce is how fast it makes anything taste like a restaurant appetizer. It’s creamy, tangy, and has that signature horseradish kick that makes you keep dipping “just one more” fry, bite, or onion petal. You whisk it together in minutes, then after a short chill, it thickens up, and the flavors mellow into that exact Outback-style balance.

I love the one from Outback, and this copycat version is legit. It nails the balance: horseradish for heat, ketchup for sweetness, and that classic color, and a paprika-garlic-oregano combo that brings deep, savory flavor. Let it chill a bit, and it gets even better, thicker, smoother, and even more addictive.

Ingredients You’ll Need

• ½ cup mayonnaise
• ½ cup sour cream
• 3 tablespoon ketchup
• 2 tablespoon prepared horseradish
• 1 teaspoon paprika
• ½ teaspoon kosher salt
• 1 teaspoon granulated garlic
• ½ teaspoon dried oregano
• ½ teaspoon black pepper
• ¼ teaspoon cayenne pepper

How To Make Bloomin’ Onion Sauce

Step 1: Mix the Ingredients

In a medium bowl, add mayonnaise, sour cream, ketchup, horseradish, paprika, salt, granulated garlic, oregano, black pepper, and cayenne. Stir until the mixture is completely smooth and creamy.

Step 2: Chill for Best Flavor

Cover the bowl and refrigerate for at least 30 minutes. This helps the flavors blend, and the sauce thicken slightly—just like the Outback version.

Step 3: Serve

Give the sauce a quick stir before serving. Serve with Bloomin’ Onions, fries, tenders, or spread onto burgers and sandwiches.

Expert Tips To Make The Best Bloomin Onion Sauce

• Use full-fat mayo and sour cream: They’re what give this sauce that thick, creamy Outback-style texture, and they balance the horseradish heat so it tastes bold, not harsh.
• Adjust the heat to your taste: Horseradish is the main “kick,” cayenne is the background heat. Want it spicier? Add a little more horseradish first, then cayenne in tiny pinches. Want it milder? Cut back on horseradish and skip or reduce the cayenne.
• Let it chill before serving: This sauce gets noticeably better after 30 minutes in the fridge. The flavors blend, the garlic/paprika mellow, and the texture thickens up into that perfect dip consistency.
• Fine-tune the balance at the end: If you want more brightness, add a small squeeze of lemon juice. If you want it slightly sweeter, add an extra teaspoon of ketchup. Mix, taste, and adjust in small steps.
• Make it ahead for the best flavor: This sauce keeps well in the fridge for up to 5 days, and it honestly tastes even better the next day. Give it a quick stir before serving.

Bloomin’ Onion Sauce FAQs

Can I make this without horseradish?

Yes, but it won’t taste exactly like Outback’s because horseradish is the signature kick. For a milder version, swap in about ½ teaspoon Dijon mustard. You’ll keep some tang, just less of that classic “bite.”

How long does bloomin’ onion sauce last?

Stored in an airtight container in the refrigerator, it keeps well for up to 5 days. Give it a quick stir before serving since it can thicken slightly as it sits.

Can I use Greek yogurt instead of sour cream?

Yes. Use full-fat Greek yogurt for the closest creamy texture. It will taste a bit tangier than sour cream, but it still makes a great copycat dipping sauce.

What else can I serve bloomin’ onion sauce with?

It’s amazing with fries, onion rings, chicken tenders, burgers, roasted potatoes, and as a spread for sandwiches and wraps. Basically, anything crispy gets better with it.

Is bloomin’ onion sauce the same as petal sauce?

Yes. This style of creamy, tangy, lightly spicy dipping sauce is often called “petal sauce,” and it’s what people mean when they’re looking for the Outback Bloomin’ Onion dip.

My Final Thoughts

This Outback Bloomin’ Onion sauce is creamy, zesty, and perfectly spiced. It's the ultimate dip for crispy onions and so much more. It’s quick to make, tastes authentically “restaurant,” and brings any appetizer or meal to life. Pair it with the homemade Bloomin’ Onion you just made, and you’ll feel like you’re dining at Outback from your own kitchen.

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