Caramelize Onions: (This step could be done in advance. Store caramelized onions in fridge until ready to use). Heat butter and oil in a sauté pan over low heat. Add onions. Cook, stirring every few minutes, for about 30 minutes, until caramelized and deep rich golden color. Remove to bowl to cool.
Make Dip: In a mixing bowl add Greek yogurt, sour cream, mayo, garlic, chives and salt. Stir in caramelized onions. Taste and add salt and pepper, as needed. (I like to reserve a pinch of chives and caramelized onions to add on top of the dip before serving.) Refrigerate for at least 30 minutes before serving to allow the flavors to blend.
1 cup plain Greek yogurt, 1/2 cup sour cream, 1/2 cup mayonnaise, 3 garlic cloves, 2 Tablespoons chopped fresh chives, 1 teaspoon kosher salt, ¼ teaspoon fresh cracked black pepper
Serve with dipping items like ruffles or kettle potato chips, pretzel thins, pita bread, crackers, or veggies. Use leftover dip as a condiment for burgers or sandwiches. Leftovers will keep in the fridge for 5 days.
Video
Notes
Yield: makes about 2 1/2 cups. Serving size is 1/4 cup.Make Ahead Instructions: I like to caramelize the onions in advance so the dip is easy to throw together in just a few minutes. The dip can be kept in an airtight container in the fridge for up to 5 days. I love to use leftovers as a spread for burgers or sandwiches!