Homemade Outback Bloomin Onion Sauce Recipe (Better Than The Original)

That little bowl of creamy, peppery sauce that lands next to a Bloomin Onion is the reason most of us keep dipping long after the onion is gone. This Outback Bloomin Onion Sauce starts with a smooth mayonnaise base, then adds prepared horseradish, ketchup, paprika, and a touch of cayenne, so it tastes creamy first and spicy at the finish. It uses nine pantry ingredients and takes about 5 minutes to stir together with no cooking at all. Chill it for 30 minutes and it is ready for onion rings, fries, burgers, and fried shrimp.

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The iconic Bloomin Onion sauce

Outback’s dipping sauce is what turns a fried onion into the Bloomin Onion experience. It is creamy and pale orange, with a clear horseradish bite and a warm, slow finish from cayenne.

This version is built for home kitchens. Everything goes in one bowl, with no cooking, blending, or special equipment. The sauce works on far more than onions, so one small batch rarely sits around for long.

Why this recipe works

• Mayonnaise carries the heat. The fat in the mayo spreads the horseradish and cayenne evenly and softens their sharpness, so the sauce tastes creamy before the spice arrives.
• Ketchup rounds the edges. A small amount adds sweetness, a little tang, and the soft orange color.
• Resting time matters. Right after mixing, the sauce can taste flat or uneven. A short chill gives the horseradish and spices time to blend into the mayonnaise, and one reader said that step made it taste right.
• Layered seasoning. Paprika, garlic powder, oregano, black pepper, and cayenne each add a small note, so no single spice stands out.

This copycat Blooming Onion Sauce has many uses

You can’t find a better dipping sauce for onion rings or onion petals than this recipe, but Blooming Onion dip sauce is much more versatile. This sauce also works particularly well with mild or sweet fried vegetables, such as fried mushrooms, sweet potato fries, and French fries.

Try it on breaded shrimp, chicken tenders, tater tots, or mozzarella sticks! Trying to get your family to eat a little healthier? Kids (and their parents) will gobble up carrots, celery sticks, and even broccoli when they can dip them in a bowl of Bloomin Onion sauce!

Bloomin Onion sauce is a wonderful condiment for hamburgers, chicken, and salmon. Experiment for yourself, and you will find that it’s the perfect accompaniment for any meal that needs a little zip.

Bloomin Onion Sauce ingredients 

Here is what you need to make the blooming onion dipping sauce (click on the recipe card to get the exact amount of the ingredients and the full recipe.) :

• Mayonnaise – I recommend using Hellman’s, Best Foods, or Duke’s
• Ketchup –  I typically make this with Heinz brand
• Prepared horseradish – you can find this in the grocery store in the refrigerated section
• Paprika – this is for color and a hint of spice
• Salt – dials up the flavor 
• Garlic powder – this gives the sauce a bit of a kick
• Dried oregano – balances out the flavor 
• Black pepper – this gives a delicious note to this sauce
• Cayenne pepper – gives another layer of heat 

Ingredient Notes

• Fresh horseradish root is much stronger than the jarred kind, so use a little less if you grate your own.
• Oregano divides readers. Some say it is essential, and others leave it out, so it is the easiest ingredient to adjust to your taste.
• Use jarred prepared horseradish, not horseradish powder. See the questions below for how to handle powder.

How to Make Outback Bloomin Onion Sauce

1. Place all the ingredients in a bowl and stir to combine.
2. Refrigerate the sauce for at least 30 minutes before serving.

Preparing and storing tips for the Outback Bloomin Onion Sauce recipe

• Start with a little less horseradish than you think you need. You can add more, but you cannot take it out.
• Make it ahead. The flavor settles in as it sits, so it is a good party sauce.
• Spoon what you plan to serve into a small bowl and keep the rest covered in the refrigerator.

What to serve with Outback Bloom sauce?

You can serve this sauce with so many things; here are some of my favorites!

• Fried shrimp
• French fries
• Outback Bloomin Chicken
• Outback Bloomin Onion

Storage & Reheating Instructions

• Refrigerator Storage: Store in an airtight container for up to 7 days. Stir before serving, since a little liquid can settle on top.
• Reheating Method: No reheating needed. Serve cold, straight from the refrigerator.
• Freezer Storage: Not recommended. Mayonnaise-based sauces separate when thawed.

Best Outback Copycat Recipes

• Alice Springs Chicken
• Bloomin Onion Recipe
• Creamy Onion Soup
• Outback Caesar Salad Dressing
• Outback Honey Mustard Dressing
• Outback Sweet Potato
• Sauteed Mushrooms
• Steakhouse Baked Potato
• Steamed Green Beans
• Tiger Sauce Recipe

Best Copycat Onion Rings Recipes

• Dairy Queen Onion Rings
• Red Robin Onion Rings
• Sonic Onion Rings

Be sure to look at more of my Outback Steakhouse copycat recipes, delicious dips, and tasty appetizers.

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This recipe was adapted from spiccycp.