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Rich Caramelized Onion Dip Without Soup Mix

Close-up of creamy caramelized onion dip topped generously with golden brown caramelized onions in a white bowl.

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Make a deeply flavorful, creamy dip from scratch by slowly caramelizing fresh onions until they are jammy and sweet.

Ingredients

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  • 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 fresh thyme leaves
  • 1 tablespoon balsamic vinegar
  • 8 ounces cream cheese, softened
  • 1/2 cup sour cream
  • 1/4 cup mayonnaise
  • 1/4 cup Gruyere cheese, shredded (optional)

Instructions

  1. Heat butter and olive oil in a large skillet over medium-low heat. Add the sliced onions, salt, and pepper.
  2. Cook the onions slowly, stirring every 5 to 10 minutes, for 45 to 60 minutes until they are deep brown, soft, and sweet. Do not rush this step.
  3. Stir in the thyme and balsamic vinegar during the last 5 minutes of cooking. Remove from heat and let cool slightly.
  4. In a medium bowl, beat the softened cream cheese until smooth.
  5. Mix in the sour cream and mayonnaise until fully combined.
  6. Fold the cooled caramelized onions into the cream cheese mixture. If using, stir in the shredded Gruyere cheese.
  7. Cover the dip and refrigerate for at least 2 hours to allow the flavors to meld.
  8. Serve chilled or at room temperature with chips, crackers, or vegetable sticks.

Notes

  • For a warm dip, bake the assembled dip in an oven-safe dish at 350 degrees Fahrenheit for 15 minutes until heated through.
  • If you prefer a sharper flavor, substitute 2 tablespoons of heavy cream for the mayonnaise.
  • To achieve perfect caramelization, keep the heat low; the onions should soften and brown slowly, not burn.

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