Creamy Blooming Onion

Featured in Secret Sauces & Marinades Worth Knowing.

This creamy, zesty onion dip uses mayo and sour cream as its base, balanced with a kick of horseradish and ketchup. A carefully blended mix of garlic, paprika, oregano, and a trio of peppers gives it a bold, complex flavor. Letting it chill for at least 30 minutes is key to deepening the flavors. This dip is a hit with fried veggies, fries, or any crispy snack you’ve got.
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Updated on Wed, 02 Apr 2025 00:47:24 GMT
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This luscious, velvety dip beautifully combines smoky notes, spiciness, and tartness – our homemade version of Outback's beloved Blooming Onion Sauce turns simple appetizers into something special. It's not just for dipping though; this flexible sauce adds amazing flavor to your sandwiches, wraps, and anything needing a tasty punch.

I've tweaked this sauce forever, and when I brought it to our family dinner last month, my Outback-obsessed brother-in-law couldn't spot any difference from their original. The real trick? Letting everything sit together overnight so all those flavors can really blend.

Key Components and Choices

  • Mayonnaise: Go with regular full-fat for the smoothest texture and best overall taste
  • Sour Cream: Regular (not light) gives you that perfect tang and smooth consistency
  • Prepared Horseradish: This hidden hero brings that distinctive zip everyone loves
  • Paprika: Pick smoked variety for real flavor depth
  • Oregano: Stick with dried instead of fresh for this sauce
  • Fresh Garlic: Always chop it fresh – it's way more flavorful than powder
  • Cayenne: Brings that gentle warmth that grows with every taste

Simple Preparation Guide

1. Mix Your Foundation
Blend mayo and sour cream until totally smooth, Stir in ketchup until you get an even color, Mix the horseradish in completely
2. Add Flavors
Drop in all your dry spices: paprika, cayenne, oregano, Stir in your chopped garlic, Sample and tweak spices as needed
3. Let It Rest
Put a tight lid on it, Cool in fridge at least 30 minutes, but overnight works best, Give it a good stir before using
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Cooling and Keeping Advice

Your sauce needs proper resting time to develop its complete flavor. Keep it in a sealed container in your fridge, where it'll stay good for about a week, and actually improve every day as everything blends together.

Ways to Switch Things Up

Try different versions by changing how spicy you make it or adding extra spices. I love throwing in a bit of white pepper or some Worcestershire sauce to make it even richer.

Pairing Recommendations

Don't just use it with blooming onions – try it with sweet potato fries, slather it on your hamburgers, or dunk fresh veggies in it. It's awesome on fish tacos too!

Our household's special touch is adding the tiniest bit of celery salt – it's that mystery element that makes everyone ask what your secret is.

After trying loads of times to copy this famous sauce, I've learned that waiting is really the magic part. Letting everything sit together overnight turns good into amazing, making a sauce that improves whatever food it touches. Whether you're dunking, spreading, or pouring, this sauce shows how simple ingredients can create the most unforgettable flavors.

Nutritional Information

Though this sauce isn't exactly diet food, 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, plus the garlic helps boost your immune system.

Fixing Common Problems

If your sauce looks too runny, just add small spoonfuls of sour cream until it thickens up. Got lumps? Whisk it harder to mix in all the dry stuff properly. Too hot for your taste? A little extra mayo will cool things down.

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Homemade Blooming Onion Sauce (Outback Copycat) Recipe | cookbybook.com

Local Twists

People make this sauce differently depending where they live. Southwest folks often add chipotle for smokiness. Up in New England, they'll throw in some Old Bay seasoning, while down South you might find a splash of bourbon for extra flavor.

Complete Dinner Ideas

Take this sauce beyond dipping by using it in full meals. Try soaking chicken in it before grilling, mix it into your coleslaw for extra zip, or spread it in wraps and sandwiches. It even makes a great spicy pasta salad dressing.

Safety Reminders

Since this sauce has mayo and sour cream in it, you need to be careful. Don't leave it sitting out more than 2 hours. At picnics or cookouts, keep it in an ice bath. Always use clean spoons when dipping to avoid spoiling it.

Changing Batch Size

This recipe works for both small dinners or big parties. For crowds, just multiply everything equally and mix in smaller batches to make sure the spices spread evenly. Making it just for yourself? Cut everything into quarters.

Grocery Buying Guide

Find fresh horseradish in the cold section near pickles or deli stuff – this kind tastes way better. For mayo, the full-fat types create the creamiest sauce, but try different brands until you find your favorite.

Frequently Asked Questions

→ How long does it last in the fridge?
Keep it fresh in a sealed container for up to five days.
→ How can I tone down the spice?
Skip or cut back on cayenne for a less spicy version.
→ Why is chilling important?
It gives the flavors time to settle and taste their best.
→ Can I go with low-fat mayo and sour cream?
You can, but expect it to come out a bit thinner.
→ What’s good to pair this with?
Fries, veggies, crispy snacks, or even on sandwiches!

Blooming Onion Sauce

This tangy mix of mayo, sour cream, and horseradish, with just the right spices, brings the Outback's famous onion sauce flavor straight to your table. Perfect for dipping into crispy bites or veggies.

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

Category: Sauces & Marinades

Difficulty: Easy

Cuisine: American

Yield: 5 Servings

Dietary: Low-Carb, Vegetarian, Gluten-Free

Ingredients

→ Base

01 2 tablespoons of prepared horseradish
02 3 tablespoons of ketchup
03 ½ cup of sour cream
04 ½ cup of mayonnaise

→ Seasonings

05 ¼ teaspoon of cayenne pepper
06 ½ teaspoon of black pepper
07 1 teaspoon of paprika
08 1 teaspoon of granulated garlic
09 ½ teaspoon of kosher salt
10 ½ teaspoon of dried oregano

Instructions

Step 01

Grab a medium bowl and toss everything in. Stir till it’s creamy and smooth.

Step 02

Pop it in the fridge for at least half an hour so the flavors can come together.

Step 03

Give it another quick stir before digging in or serving.

Notes

  1. Inspired by the famous onion sauce from Outback Steakhouse.
  2. Awesome dip for crispy onion rings or fresh veggies.
  3. You can prepare it in advance and keep it chilled.

Tools You'll Need

  • A regular mixing bowl, medium size.
  • Measuring spoons and cups for accuracy.
  • A spoon or whisk to mix well.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Includes eggs due to the mayo.
  • Contains dairy from the sour cream.