Easy Blooming Onion Sauce

Featured in Elevate Any Dish with Homemade Sauces & Marinades.

This creamy Outback-inspired onion sauce captures the beloved dipping flavor with mayo, sour cream, and a tangy hit of horseradish. A perfect blend of spices like paprika, oregano, and peppers creates a bold taste. Letting it chill for 30 minutes makes the flavors pop. Use it with fried onions, fries, or veggies for a versatile, crowd-pleasing dip.
A chef holding a plate of food.
Updated on Thu, 20 Mar 2025 02:25:13 GMT
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Easy Blooming Onion Sauce | linacooks.com

A smooth, velvety dip that masterfully combines smoky notes, spiciness, and sourness – this homemade version of Outback's popular Blooming Onion Sauce turns any starter from basic to amazing. It's way more than a simple dip, this handy mixture adds flavor bursts to your sandwiches, wraps, and anything craving a tangy boost.

I've tweaked this mix for ages, and when I brought it to our family dinner last month, my sister's husband, who absolutely loves Outback, couldn't spot any difference from their original sauce. The secret was letting everything sit together overnight so all the flavors could really mingle well.

Key Components and Choices

  • Mayonnaise: Go with regular full-fat for the creamiest feel and best taste development
  • Sour Cream: Regular version gives you that perfect tang and silky smoothness
  • Prepared Horseradish: This hidden hero creates the distinctive punch
  • Paprika: Pick smoked variety for real flavor depth
  • Oregano: Stick with dried instead of fresh for this mix
  • Fresh Garlic: Finely chopped fresh beats powder for sharper taste
  • Cayenne: Brings that gentle heat that grows with every dip

Simple Preparation Guide

1. Make Your Foundation
Blend mayonnaise and sour cream till they're totally smooth, Mix in ketchup until the color looks even, Stir horseradish in completely
2. Add Your Seasonings
Pour in all powdered items: paprika, cayenne, oregano, Stir in your chopped garlic, Sample and tweak flavors carefully
3. Let It Develop
Seal container well, Cool in fridge at least 30 minutes, but overnight works best, Give it a good stir before you serve
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Blooming Onion Sauce Recipe | linacooks.com

Cool Storage Advice

Your sauce needs time for the flavors to really come together. Keep it in a sealed container in your fridge, where it'll stay good up to seven days, improving daily as everything melds together.

Personal Twists

Play around with different versions by changing the heat amount or trying new spices. I really like adding a bit of white pepper or a splash of Worcestershire sauce for more flavor depth.

Ways To Enjoy

Besides the typical blooming onion, try this with sweet potato fries, slathered on hamburgers, or as a veggie dip. It's also fantastic on fish tacos!

My household's hidden trick is adding just a tiny bit of celery salt - it gives that special something that makes everyone ask what's in it.

After trying so many times to copy this famous sauce, I've learned that waiting is really the magic ingredient. Letting everything sit together overnight changes a good sauce into an amazing one, making that must-have topping that improves everything it touches. Whether you're dipping, spreading, or drizzling, this mix shows how the simplest combinations often make the most unforgettable flavors.

Health Information

Though this sauce isn't exactly diet-friendly, you can make it healthier. Try light mayo and Greek yogurt instead of sour cream to cut calories while keeping it creamy. The horseradish and cayenne actually have some anti-inflammatory benefits, and the garlic helps boost your immune system.

Fixing Common Problems

If your sauce looks too runny, just add small amounts of sour cream until it thickens up. For a grainy texture, make sure you're mixing all dry ingredients really well with a whisk. If it's too hot, a bit more mayo can tone down the spiciness.

Homemade Blooming Onion Sauce (Outback Copycat) Recipe Pin it
Homemade Blooming Onion Sauce (Outback Copycat) Recipe | linacooks.com

Local Twists

Around the country, folks make this sauce differently. Southwest cooks might add chipotle for smokiness. New England kitchens often throw in some Old Bay seasoning, while down South you might find a splash of bourbon for extra richness.

Complete Your Dinner

Turn this sauce into part of a whole meal by using it different ways. Try soaking chicken in it before grilling, mixing it into your coleslaw for extra zip, or spreading it in wraps and sandwiches. It also works great as a base for spicy pasta salad dressing.

Safety Reminders

Since this contains mayo and sour cream, you need to be careful with storage. Don't leave it sitting out more than 2 hours. At outdoor parties, keep it cold in an ice bowl. Always use clean spoons each time you take some out to avoid spoilage.

Adjusting Amounts

Whether you're making it for just yourself or a big crowd, this mix adjusts easily. For parties, just multiply everything evenly and mix in smaller batches to get the spices blended right. For just one serving, cut everything into quarters.

Grocery Tips

Find prepared horseradish in the cold section near pickles or deli stuff - this kind tastes way better. When buying mayo, the full-fat types give the best texture, but try different brands to find your favorite.

Frequently Asked Questions

→ How long can I keep it?
Keep it in the fridge in a sealed container for up to 5 days.
→ Can I tone down the heat?
Sure thing, just skip or cut back on the cayenne pepper.
→ Why do I need to chill it?
The flavors mix and improve after chilling for a bit.
→ Can I use lighter mayo or sour cream?
Of course! It might be a little less thick, but still tasty.
→ What else pairs with this?
Anything fried, veggies, fries, or even spread on sandwiches!

Blooming Onion Sauce

Tangy, smooth, and filled with flavor, this dip mixes mayo, sour cream, horseradish, and seasonings to match Outback's famous onion sauce. Great for fried bites or veggies.

Prep Time
5 Minutes
Cook Time
~
Total Time
5 Minutes
By: Paolina

Category: Sauces & Marinades

Difficulty: Easy

Cuisine: American

Yield: 5 Servings

Dietary: Low-Carb, Vegetarian, Gluten-Free

Ingredients

→ Base

01 3 tablespoons ketchup
02 2 tablespoons pre-made horseradish
03 ½ cup sour cream
04 ½ cup mayonnaise

→ Seasonings

05 ¼ teaspoon cayenne pepper
06 ½ teaspoon oregano (dried)
07 1 teaspoon garlic powder
08 1 teaspoon paprika
09 ½ teaspoon kosher salt
10 ½ teaspoon ground black pepper

Instructions

Step 01

Stir everything together in a bowl until it’s smooth and mixed well.

Step 02

Pop it in the fridge covered up for at least half an hour to boost flavor.

Step 03

Give it a quick stir before serving.

Notes

  1. Inspired by the famous dipping sauce at Outback Steakhouse.
  2. A great match for both fried onion rings and fresh veggies.
  3. Can be prepped beforehand and kept chilled until needed.

Tools You'll Need

  • A bowl big enough for mixing
  • Measuring tools for dry and wet ingredients
  • Spoon or whisk to mix it all up

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Eggs from mayo
  • Dairy from sour cream