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Caramelized Onion Dip in a green bowl garnished with fresh thyme along with potato chips, and veggies beside it.
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5 from 5 votes

Caramelized Onion Dip (Gluten Free & Low Carb)

Caramelized onion dip is made with fresh caramelized onions, sour cream and mayo. The perfect dip for parties, entertaining or anytime.
Prep Time5 mins
Cook Time30 mins
Total Time35 mins
Course: Appetizers, Dip, Snack
Cuisine: American, Gluten Free, Low Carb
Servings: 8
Calories: 172kcal
Author: Stephanie


Caramelized Onions:

  • 2 large yellow onions chopped
  • 1 ½ tbsp. unsalted butter
  • 1 tbsp. olive oil
  • ½ tsp. dried thyme
  • sprinkle of salt on onions
  • 1 tbsp. balsamic vinegar


  • 1 ½ cups sour cream
  • ¼ cup mayo
  • ½ tsp. garlic powder
  • ½ tsp. onion powder
  • ½ tsp. dried parsley flakes
  • salt & pepper to taste


  • Melt butter and olive oil over medium heat in cast iron skillet and add chopped onions.
  • Cook about 4-6 minutes. Then add dried thyme, a sprinkle of salt over onions and stir.
  • Continue to cook and stir checking frequently approximately 20 more minutes.
  • Then add balsamic vinegar, stir and remove from heat to cool.
  • Put cooled caramelized onions in a bowl along with remaining dip ingredients and combine.
  • Cover and refrigerate a minimum of 2 hours before serving.


Taste for salt & pepper prior to serving and add if necessary.


Calories: 172kcal