Preheat the oven to 350 degrees Fahrenheit (175 degrees Celsius).

Prepare the chicken wings by cutting off the small piece and the bony part, leaving only the meaty section.

In a mixing bowl, combine ketchup, chopped onion, brown sugar, and Worcestershire sauce to create the barbecue sauce.

Dip each chicken wing into the sauce, ensuring they are well-coated.

Place the sauced wings on a lined baking sheet.

Bake in the preheated oven for about 1.

5 hours or until the wings are cooked through and crispy, turning them halfway through.

Optional: If there is extra sauce, simmer it in a saucepan until it thickens for a flavorful dipping sauce.