Copycat Outback Steakhouse Bloom Sauce Recipe
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| Creamy, tangy, and just spicy enough, this copycat Outback bloom sauce turns onion petals, burgers, and crispy sides into a craveable appetizer spread. |
If you love that famous creamy, zippy dipping sauce served with a blooming onion, this easy copycat Outback Steakhouse Bloom Sauce recipe is for you. It’s tangy, a little spicy, slightly sweet, and full of bold flavor. Best of all, you can stir it together in just a few minutes with simple pantry ingredients.
This homemade blooming onion sauce is great for more than just onion petals. Try it with fries, chicken tenders, burgers, sandwiches, and even roasted vegetables. Once you make it at home, you may want to keep a jar in the fridge all week long.
Why Everyone Loves This Bloom Sauce
Outback Steakhouse has built a big fan base with hearty steaks, Aussie-inspired branding, and that iconic blooming onion appetizer. The restaurant made the oversized fried onion feel like an event. It arrives hot, crisp, golden, and dramatic, with a cool dipping sauce on the side that ties the whole thing together.
That sauce is a big part of the experience. It’s smooth and creamy, but also peppery, tangy, and just spicy enough to wake up your taste buds. The cool mayo base softens the heat, while the spices bring that savory restaurant-style kick. It’s the kind of sauce that makes you dip one more piece... and then another.
This recipe is inspired by that restaurant favorite. We are not claiming this is the exact proprietary recipe from Outback Steakhouse, only a homemade version that captures a similar flavor and texture.
What This Copycat Bloom Sauce Tastes Like
If you’ve never made a bloom sauce recipe at home, think of it like a cross between a spicy mayo and a seasoned dipping sauce. It has:
- Creaminess from mayonnaise and sour cream
- Tang from ketchup and prepared horseradish
- Warm spice from paprika, cayenne, and black pepper
- Depth from garlic powder and onion powder
- A tiny bit of sweetness to balance the heat
It’s bold without being overwhelming. In other words, it has enough personality to stand up to fried foods, but it still plays nicely with everyday meals.
Ingredients for Copycat Outback Bloom Sauce
This recipe uses basic ingredients that are easy to find in most USA grocery stores.
- 1/2 cup mayonnaise
- 2 tablespoons sour cream
- 2 tablespoons ketchup
- 1 tablespoon prepared horseradish
- 1/2 teaspoon paprika
- 1/4 teaspoon garlic powder
- 1/4 teaspoon onion powder
- 1/4 teaspoon salt
- 1/4 teaspoon black pepper
- 1/8 teaspoon cayenne pepper, or more to taste
- 1/8 teaspoon dried oregano
- Optional: 1/2 teaspoon white vinegar for extra tang
Serving size: About 6 servings
Prep time: 10 minutes
Chill time: 30 minutes recommended
Approximate Nutrition Per Serving
These numbers are estimates and can vary based on ingredient brands and portion size.
- Calories: 95
- Fat: 9g
- Carbohydrates: 2g
- Protein: 0g
- Sugar: 1g
- Sodium: 170mg
How to Make Bloom Sauce at Home
This easy blooming onion sauce recipe is as simple as mix, taste, and chill. That’s it. Still, a few little details can make it taste even better, so let’s walk through it step by step.
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Start with a medium bowl.
Add the mayonnaise, sour cream, ketchup, and prepared horseradish to the bowl. Stir until smooth and evenly blended. You want the base to be creamy with no streaks. -
Add the seasonings.
Sprinkle in the paprika, garlic powder, onion powder, salt, black pepper, cayenne, and oregano. If you like a slightly sharper sauce, add the vinegar too. -
Whisk until fully combined.
Use a small whisk or spoon and mix well. Make sure the spices are evenly distributed so every bite tastes balanced. The color should be a light orange-pink with tiny specks of seasoning throughout. -
Taste and adjust.
This is where you make it your own. Want more heat? Add a pinch more cayenne. Want more tang? Add a little extra horseradish or a few drops of vinegar. If it tastes too strong, add a spoonful of mayo to mellow it out. -
Chill before serving.
Cover the bowl and refrigerate for at least 30 minutes. This gives the flavors time to settle and blend together. It really does make a difference. Right after mixing, the sauce tastes good. After chilling, it tastes more like the restaurant-style version. -
Serve cold.
Spoon into a small dipping bowl and serve with blooming onion petals, onion rings, fries, chicken strips, or burgers.
Tips for the Best Bloom Sauce Recipe
- Use full-fat mayonnaise for the richest texture and flavor.
- Don’t skip the chill time. It helps the spices wake up and blend together.
- Use prepared horseradish, not creamy horseradish sauce, unless that’s all you have. If using creamy horseradish, reduce the mayo slightly.
- Adjust the cayenne slowly. A little goes a long way.
- Make it a day ahead if you want even deeper flavor.
I like to make this sauce in the morning if I know we’re having burgers or appetizers for dinner. It’s one of those little prep-ahead tricks that makes everything taste better without much extra work.
What to Serve with Bloom Sauce
Sure, this is a copycat blooming onion sauce, but don’t stop there. This sauce is useful all over the kitchen.
- Blooming onion or onion rings
- French fries or sweet potato fries
- Chicken tenders or nuggets
- Burgers and sliders
- Fried pickles
- Roasted potatoes
- Sandwiches and wraps
- Grilled shrimp
Think of it like your favorite all-purpose burger sauce, but with a little more spark.
Easy Home Kitchen Shortcuts
If you want the full restaurant-style snack experience at home, but without deep frying, here are a few easy ideas:
- Use frozen onion rings: Bake or air fry them and serve with this homemade bloom sauce.
- Air fryer blooming onion: Make a lighter version in the air fryer and use this sauce for dipping.
- Burger night shortcut: Spread this sauce right on buns instead of making a separate burger sauce.
- Wrap sauce: It’s great drizzled inside a crispy chicken wrap.
The air fryer option is especially handy. You still get crisp edges and tender onion without dealing with a pot of hot oil.
Allergy-Friendly and Diet Preference Swaps
One thing that makes homemade sauces so nice is how easy they are to tweak. If someone at your table has food allergies or dietary needs, try one of these ideas.
Gluten-Free
This sauce is often naturally gluten-free, but always check your labels, especially on ketchup, horseradish, and seasoning blends. Serve it with gluten-free onion rings, fries, or veggies.
Dairy-Free
Swap the sour cream for a dairy-free sour cream alternative, or simply use more mayonnaise. Many store-bought mayo brands are already dairy-free, but check the label to be sure.
Egg-Free
Use an egg-free mayonnaise. Then either use a dairy-free sour cream substitute or leave out the sour cream and add a small extra spoonful of egg-free mayo.
Vegan
Use vegan mayonnaise, vegan sour cream, and confirm your ketchup and horseradish are vegan-friendly. The spice blend itself is easy to keep plant-based.
Paleo-Inspired
Use a paleo mayo and unsweetened compliant ketchup. Replace sour cream with extra paleo mayo or a dairy-free paleo-friendly alternative. Serve with roasted vegetables or baked potato wedges instead of breaded fried foods.
Low-Spice Version
Cut the cayenne in half or leave it out completely. You can also reduce the horseradish a bit for a milder flavor that kids may enjoy more.
Extra-Spicy Version
Add an extra pinch of cayenne, a dash of hot sauce, or a little more horseradish. This is a fun option if you love restaurant sauces that have a bigger kick.
Food Safety and Storage
Because this sauce contains mayonnaise and sour cream, it should be kept cold.
- Store in an airtight container in the refrigerator.
- Use within 4 to 5 days for the best flavor and texture.
- Do not leave it sitting out at room temperature for more than 2 hours, or 1 hour if the room is very warm.
- If serving with cooked foods like chicken, make sure chicken reaches an internal temperature of 165°F.
If the sauce smells off, separates too much, or has been left out too long, it’s best to toss it and make a fresh batch.
Frequently Asked Questions
Is Bloom Sauce the same as spicy mayo?
Not exactly. It has some similarities, but blooming onion sauce usually includes more seasoning and horseradish for a more layered flavor.
Can I make this ahead of time?
Yes. In fact, it tastes even better after a few hours in the fridge.
Can I freeze it?
No, I wouldn’t recommend it. Mayo-based sauces tend to separate after freezing and thawing.
What if I don’t have horseradish?
You can leave it out, but the sauce will lose some of its signature zip. A tiny bit of Dijon mustard can help in a pinch, though the flavor will be different.
Final Thoughts
This copycat Outback Steakhouse Bloom Sauce recipe is one of those small kitchen wins that makes homemade meals feel a little more fun. It takes just minutes to mix up, and it turns simple snacks into something special. Whether you’re making onion rings for game day or just want a new burger sauce for the weekend, this recipe is easy, flavorful, and worth keeping in your regular rotation.
If you make it, I’d love to hear how you served it. Did you pair it with fries, a blooming onion, or maybe something unexpected? Leave a comment and share your ideas. And if you enjoyed this recipe, please share it with friends and family who love restaurant-style sauces at home.
Disclaimer
This is a copycat recipe inspired by the flavor of a popular restaurant sauce. It is not the original recipe, and no knowledge of Outback Steakhouse’s actual proprietary recipe is implied. This post is created for home cooks who want to make a similar-style sauce in their own kitchens.
Simply Copycat Recipes is also an Amazon affiliate. That means we may earn a small commission from qualifying purchases made through affiliate links, at no extra cost to you.
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