Heat a skillet over medium heat and add olive oil. Sauté the diced onion and salt for 15–20 minutes until caramelized.

In a mixing bowl, combine Greek yogurt, mayonnaise, garlic powder, Worcestershire sauce, and pepper. Whisk until smooth.

Fold the cooled caramelized onions into the yogurt mixture. Adjust seasoning as needed.

Cover and chill the dip in the refrigerator for at least 30 minutes to meld flavors.

Serve in a bowl, garnished with herbs, alongside chips or veggies.