In a food processor or blender, combine the cooked onions, 1-1/2 cups Greek yogurt, 1/4 cup mayo, 1 tablespoon honey, 1 tablespoon Worcestershire sauce, 1/4 teaspoon salt, and a dash of black pepper. Blend until smooth and creamy. Taste and adjust seasoning if needed. Chill for at least 30 minutes before serving.