Bloomin Sauce Recipe: Creamy Spiced Outback Copycat

This copycat sauce delivers the creamy, tangy flavor you love from Outback’s famous Bloomin’ Onion.

With just a few pantry staples and 5 minutes of mixing, you’ll have the perfect dipping sauce for appetizers, fries, or sandwiches.

Ingredients for Bloomin Sauce

Nine ingredients. Five minutes. This copycat sauce nails the Outback original.

The mayo and sour cream are the base—Duke’s or Hellmann’s for mayo, and any full-fat sour cream works. Horseradish is non-negotiable for that signature kick (find it near the condiments at Walmart or Kroger). I grab the Silver Spring brand for horseradish—consistently fresh flavor. Paprika adds color and a hint of smoke; Penzeys has great options if you’re feeling fancy.

No horseradish? Dijon mustard at half the amount gets you close on tang, but you’ll miss the heat. Swap ketchup for chili sauce for a sweeter take. If you’re avoiding dairy, vegan mayo and coconut yogurt work (texture will differ slightly). The Worcestershire is key—Lea & Perrins is the standard. Don’t skip it; the umami depth is what makes this taste like the real deal.

This keeps 5-7 days in the fridge—stir before using, as it may separate. Doubles easily for parties. Not freezer-friendly (emulsion breaks), so make fresh when needed.

Step-by-Step Instructions for Bloomin Sauce

Here is the method I use to get that signature creamy texture and bold flavor every time.

Step 1: Combine the Creamy Base

In a medium bowl, I start by whisking together the 0.5 cup Mayonnaise and 0.5 cup Sour Cream until completely smooth. This creates the rich, velvety foundation that defines this sauce. Make sure there are no streaks of white—you want a uniform, pale cream color.

I always use full-fat versions for the best texture. The combination should look slightly thick but still pourable. At this stage, the mixture will be mild and neutral, but that’s about to change.

Step 2: Add the Tangy and Spicy Elements

Next, I stir in the 2 tbsp Prepared Horseradish, 2 tbsp Ketchup, and 1 tsp Worcestershire Sauce. The horseradish adds that signature kick, while the ketchup and Worcestershire contribute tangy depth. Mix well after each addition to fully incorporate the flavors.

Watch for the color to shift to a pale pinkish hue—that’s how you know the ketchup is evenly distributed. The horseradish will give it a slight bite, but remember, you can always adjust the heat later if needed.

Step 3: Season and Perfect the Flavor

Now, I add the 0.5 tsp Garlic Powder, 0.5 tsp Paprika, 0.25 tsp Salt, and 0.25 tsp Black Pepper. These seasonings round out the flavor profile, with the garlic and paprika adding warmth and the salt and pepper balancing the blend.

I whisk everything together for at least 30 seconds to ensure the spices are fully integrated. The sauce should now be creamy with a slightly thicker consistency, and you’ll notice a more complex aroma.

Step 4: Chill and Let the Flavors Meld

Transfer the sauce to an airtight container and refrigerate for at least 30 minutes. This resting time allows the flavors to meld together, and the sauce will thicken slightly as it chills.

I like to give it a quick stir before serving to bring it back to a smooth, dippable consistency. The sauce should coat the back of a spoon and have a vibrant, well-balanced taste that’s creamy, tangy, and just a little spicy.

Flavor Customization for This bloomin sauce

Spice Level Adjustments

For a milder version, reduce the horseradish to 1 tbsp or substitute with 1 tbsp Dijon mustard. This maintains tang without the heat. I often do this when serving to kids or sensitive palates.

Sweet and Smoky Twist

Swap the ketchup for 2 tbsp chili sauce and add ½ tsp smoked paprika for a sweeter, deeper flavor. This pairs wonderfully with grilled meats or as a burger spread. 🌶️

Herb-Infused Variation

Add 1 tbsp finely chopped fresh dill or 1 tsp dried dill to the base mixture for a bright, herby note. This works especially well with seafood or vegetable platters.

Extra Garlicky Kick

Boost the garlic flavor by adding 1 tsp garlic powder or 1 clove fresh minced garlic. This transforms the sauce into a bold, garlicky dip perfect for breadsticks or fries.

Creamy Avocado Style

Blend in ¼ cup mashed avocado for a richer, greener twist. The avocado adds creaminess and a fresh flavor that complements Mexican-inspired dishes. Stir in just before serving to prevent browning.

Dairy-Free Adaptation

Replace mayonnaise and sour cream with vegan mayo and coconut yogurt. The texture will be slightly thinner but still delicious. I recommend Hellmann’s Vegan for the closest match. 💡

Frequently Asked Questions