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The Best Homemade French Onion Dip: Rich and Creamy Party Appetizer

A close-up of rich, creamy caramelized onion dip swirled in a white bowl, featuring visible pieces of caramelized onion.

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Create the ultimate crowd-pleasing dip from scratch. This recipe features deeply caramelized onions folded into a rich, creamy base, making it the best homemade French onion dip for game days and gatherings.

Ingredients

Scale
  • 2 large yellow onions, thinly sliced
  • 2 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 1/2 teaspoon salt
  • 1/4 teaspoon black pepper
  • 1 teaspoon granulated sugar
  • 1 cup full-fat sour cream
  • 1/2 cup mayonnaise
  • 1 teaspoon Worcestershire sauce
  • 1/2 teaspoon garlic powder
  • 1/4 teaspoon onion powder

Instructions

  1. Heat the butter and olive oil in a large, heavy-bottomed skillet over medium-low heat.
  2. Add the sliced onions, salt, pepper, and sugar to the skillet. Stir to coat the onions evenly.
  3. Cook the onions slowly, stirring every 5 to 10 minutes, for 40 to 50 minutes. Reduce the heat if the onions start to brown too quickly. You want them deeply golden brown and sweet, not burnt.
  4. Remove the caramelized onions from the heat and let them cool completely to room temperature. This step is important for a creamy texture.
  5. In a medium bowl, whisk together the sour cream, mayonnaise, Worcestershire sauce, garlic powder, and onion powder until smooth.
  6. Fold the cooled caramelized onions into the sour cream mixture until they are evenly distributed.
  7. Cover the dip and refrigerate for at least 2 hours, or preferably overnight, to allow the flavors to meld.
  8. Serve your rich and creamy dip chilled with potato chips, crackers, or fresh vegetables.

Notes

  • For a shortcut, you can substitute the fresh onions with 1 packet of dry onion soup mix, but the deep flavor of slow-caramelized onions is worth the extra time.
  • If you want a slightly tangier dip, substitute half of the sour cream with plain Greek yogurt.
  • This dip tastes best when made a day ahead, as the onion flavor deepens overnight.

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