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The Best McDonald’s Breakfast Sandwich Sauce | Copycat Recipe

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If you’ve ever taken a bite of a McDonald’s breakfast sandwich and thought “what IS that sauce?” — you’re not alone. That creamy, slightly tangy, savory spread is the secret weapon behind their iconic breakfast flavor. The good news? You can make a spot-on copycat McDonald’s breakfast sandwich sauce at home with simple pantry ingredients in just minutes.

Bacon egg and cheese bagel sandwiches with dill mustard mayo on parchment paper, sprinkled with pepper and dried dill
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This homemade version tastes just like the real thing — creamy, lightly mustardy, and perfect on bacon, egg, and cheese sandwiches, bagels, or breakfast wraps.

What Is McDonald’s Breakfast Sauce?

McDonald’s breakfast sauce is a creamy mayo-based spread with mild mustard flavor, subtle sweetness, and savory seasoning. It’s not overly tangy or spicy — just smooth, rich, and balanced. The sauce ties together eggs, cheese, sausage, or bacon without overpowering them.

While McDonald’s doesn’t officially publish the recipe, this copycat version recreates that signature taste using easy-to-find ingredients.

Why You’ll Love This Copycat Breakfast Sauce

  • Tastes just like McDonald’s breakfast sauce
  • Ready in 5 minutes
  • No cooking required
  • Perfect for sandwiches, bagels, wraps, and meal prep
  • Uses basic pantry ingredients
Flat lay of ingredients for McDonald’s breakfast sandwich sauce including mayonnaise, yellow mustard, Dijon mustard, spices, and dried dill
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Ingredients for McDonald’s Breakfast Sauce

You only need a handful of ingredients to nail the flavor:

  • ½ cup mayonnaise
  • 1 tablespoon yellow mustard
  • 1 teaspoon Dijon mustard
  • ½ teaspoon garlic powder
  • ½ teaspoon onion powder
  • ½ teaspoon sugar
  • ½ teaspoon white vinegar
  • ¼ teaspoon salt
  • ¼ teaspoon black pepper

Optional but recommended:

  • Pinch of dried dill (very subtle, not overpowering)

How to Make McDonald’s Breakfast Sandwich Sauce

  1. Add mayonnaise, yellow mustard, and Dijon mustard to a small bowl.
  2. Whisk in garlic powder, onion powder, sugar, vinegar, salt, and pepper.
  3. Add a tiny pinch of dried dill if using.
  4. Mix until smooth and creamy.
  5. Cover and refrigerate for at least 30 minutes for best flavor.

That’s it — your homemade McDonald’s-style breakfast sauce is ready.

Pro Tips for the Best Flavor

  • Chill before using: The flavor develops as it rests.
  • Don’t overdo the dill: It should be barely noticeable.
  • Use full-fat mayo: It gives the closest texture to the original.
  • Taste and adjust: Add a pinch more sugar or mustard if needed.
McDonald’s breakfast sandwich sauce in a mason jar with a spoon, creamy dill mustard mayo copycat
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How to Use Breakfast Sandwich Sauce

This sauce isn’t just for breakfast — it’s incredibly versatile.

It also works surprisingly well on burgers and grilled chicken sandwiches.

Make-Ahead & Storage

  • Store in an airtight container in the refrigerator
  • Keeps fresh for up to 7 days
  • Stir before using

This makes it perfect for meal prep breakfasts all week long.

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Bacon egg and cheese bagel sandwiches with dill mustard mayo on parchment paper, sprinkled with pepper and dried dill
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McDonald’s Breakfast Sandwich Sauce (Copycat)

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  • Author: Chrissi | firsthomelovelife.com
  • Total Time: 5 minutes
  • Yield: ABOUT 3/4 CUP 1x
  • Diet: Vegetarian
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Description

This creamy copycat McDonald’s breakfast sandwich sauce is tangy, savory, and incredibly easy to make at home. Made with mayonnaise, mustard, and simple seasonings, it’s the perfect spread for bacon, egg, and cheese sandwiches, bagels, and breakfast wraps.

Ingredients

Scale

  • ½ cup mayonnaise

  • 1 tablespoon yellow mustard

  • 1 teaspoon Dijon mustard

  • ½ teaspoon garlic powder

  • ½ teaspoon onion powder

  • ½ teaspoon sugar

  • ½ teaspoon white vinegar

  • ¼ teaspoon salt

  • ¼ teaspoon black pepper

  • Pinch of dried dill (optional but recommended)

Instructions

  • Add the mayonnaise, yellow mustard, and Dijon mustard to a small bowl.

  • Whisk in garlic powder, onion powder, sugar, vinegar, salt, and black pepper.

  • Add a small pinch of dried dill, if using.

  • Stir until smooth and creamy.

  • Cover and refrigerate for at least 30 minutes before using for best flavor.

Notes

  • For the closest flavor, use full-fat mayonnaise.

  • Chill the sauce before serving to allow the flavors to fully develop.

  • Store leftovers in an airtight container in the refrigerator for up to 7 days.

  • Prep Time: 5 MINUTES
  • Category: CONDIMENT, SAUCE
  • Cuisine: American

Did you make this recipe?

Share a photo and tag me @ihearthomesteading! I can’t wait to see what you’ve made!

FAQs About McDonald’s Breakfast Sauce

Is this the exact McDonald’s recipe?

No — McDonald’s recipe is proprietary. This is a copycat version designed to closely match the taste and texture using common ingredients.

Is McDonald’s breakfast sauce the same as Big Mac sauce?

No. Big Mac sauce is sweeter and more pickle-forward. Breakfast sauce is milder, creamier, and more savory.

Can I make it without mustard?

Mustard is key to the flavor. You can reduce it slightly, but removing it entirely will change the taste.

Is this sauce spicy?

No — it’s mild and family-friendly.

Final Thoughts

This copycat McDonald’s breakfast sandwich sauce is the missing piece for homemade breakfast sandwiches that taste just like your drive-thru favorite. Creamy, savory, and ridiculously easy, it turns any egg sandwich into something special.

Once you make it, you’ll never want a plain breakfast sandwich again.

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