In a skillet, heat olive oil over medium heat. Add finely diced yellow onion and a pinch of salt. Cook, stirring frequently, for about 15–20 minutes until golden brown and caramelized.

In a mixing bowl, combine Greek yogurt, light mayonnaise, garlic powder, and Worcestershire sauce. Season with black pepper to taste. Stir until smooth and creamy.

Once onions are cooled, gently fold them into the creamy mixture. Taste and adjust seasoning if needed.

Cover the dip and refrigerate for at least 30 minutes to allow flavors to meld together.

Transfer dip into a serving bowl. Garnish with chopped herbs if desired and serve with raw veggies, baked chips, or whole-grain crackers.