How to Make Alton Brown’s French Onion Dip: A Comprehensive Guide

Indulge in the tantalizing flavors of Alton Brown’s French Onion Dip, a culinary masterpiece that elevates any gathering. This homemade dip, crafted with caramelized onions, tangy sour cream, and rich mayonnaise, surpasses the mediocrity of store-bought options. Follow this detailed guide to recreate this delectable dip in the comfort of your own kitchen, impressing your guests with your culinary prowess.


  • 4 large yellow onions (approximately 3 1/2 pounds)
  • 1/4 teaspoon baking soda, plus a pinch
  • 1 tablespoon kosher salt
  • 1 tablespoon dark brown sugar
  • 1/4 cup olive oil
  • Sherry vinegar, for deglazing
  • 1 1/2 cups sour cream
  • 3/4 cup mayonnaise
  • 1/4 teaspoon garlic powder
  • 1/4 teaspoon freshly ground white pepper


  • Mandoline or sharp knife
  • Large pot
  • Tongs
  • Medium mixing bowl
  • Plastic wrap

Step-by-Step Instructions:

  1. Prepare the Onions:

    • Using a mandoline or sharp knife, thinly slice the onions and place them in a large pot.
    • Sprinkle the baking soda, salt, and dark brown sugar over the onions and gently toss with tongs.
    • Cover the pot and let the onions rest for 10 minutes.
  2. Caramelize the Onions:

    • After 10 minutes, uncover the pot and place it over high heat.
    • Drizzle in the olive oil and cook, stirring often, until the onions are reduced by 75% and have a light gold color.
    • Reduce heat to medium and continue cooking for approximately 15 minutes, stirring frequently.
  3. Deglaze the Pan:

    • Add a few shakes of sherry vinegar and water to the pan to deglaze it.
    • Reduce heat to low and continue stirring, scraping all the brown bits off the bottom of the pot.
    • The onions should be dark golden brown and reduced to about 1 1/2 cups in volume.
  4. Combine the Ingredients:

    • Remove the caramelized onions from heat and let them cool.
    • Once cool, transfer 1/2 cup of the caramelized onions to a medium mixing bowl.
    • Add the sour cream, mayonnaise, garlic powder, and white pepper to the bowl and stir to combine.
  5. Chill and Serve:

    • Cover the bowl tightly with plastic wrap and refrigerate for at least 1 hour before serving.
    • Overnight refrigeration allows the flavors to meld, resulting in an even more delectable dip.

Tips for Success:

  • Use High-Quality Onions: Fresh, yellow onions are essential for the best flavor.
  • Caramelize Slowly: Don’t rush the caramelization process. Allow the onions to cook slowly over low heat to develop their rich, sweet flavor.
  • Deglaze Thoroughly: Deglazing the pan with sherry vinegar helps extract all the flavorful bits stuck to the bottom.
  • Chill Before Serving: Chilling the dip allows the flavors to meld and enhances its texture.


  • Add Herbs: Incorporate fresh herbs like chives, parsley, or thyme for an extra layer of flavor.
  • Use Different Vinegars: Experiment with different vinegars, such as balsamic or red wine vinegar, to add a unique twist.
  • Top with Cheese: Sprinkle grated Parmesan or cheddar cheese over the dip before serving for a cheesy indulgence.

With this comprehensive guide, you’re now equipped to create Alton Brown’s French Onion Dip, a culinary delight that will tantalize taste buds and elevate any gathering. Embrace the joy of homemade dips and impress your guests with your culinary skills. Bon appétit!

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What are the ingredients in Dean’s French onion dip?


How do you thicken onion dip?

You could also add parmesan instead of salt. You can also replace sour cream with something thicker such as creme fraiche or yogurt. Or thicker yet: cream cheese or mascarpone. Blend that in there.

How long does homemade French onion dip last in the fridge?

If you’re planning a party and want to make your dip ahead of time, or if you have a little dip hanging around after a snacking session, it’s safe to refrigerate it for up to three weeks. For the best onion dip flavor, however, don’t store it longer than five to seven days.

How do you make a healthy French onion dip?

This healthy French Onion Dip recipe is made with protein-rich, creamy Greek yogurt and deeply caramelized onions. Caramelize Onions: Heat oil over medium/low heat, preferably in a heavy-bottomed pan (like cast iron). Add onion, stirring to evenly coat with oil. Cook for 10 minutes, then sprinkle with salt.

What is Alton Brown’s onion dip made of?

Made from caramelized onions, sour cream, and mayonnaise, Alton Brown’s Onion Dip from Scratch recipe is easy and better than store-bought. Try it out!

How do you caramelize onions in a French onion dip?

Here’s how to caramelize onions for this healthy French Onion Dip: Slice onions into roughly quarter-inch thick slices. Heat oil over medium/low heat, preferably in a heavy-bottomed pan (like cast iron) which will help the onions cook evenly. Add onion to the pan and stir to evenly coat them with oil. Cook for 10 minutes.

How do you make French onion soup dip?

The classic French onion soup dip recipe from my childhood involved folding a packet of dried soup mix (either Knorr or Lipton) into a container of sour cream. You might have gotten a little fancy and added in a few dollops Hellman’s Mayo, but basically that was it.

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