Preheat the grill. Chop meats, vegetables, onions, and more into similar sizes for even cooking. Coat your basket in cooking oil to prevent sticking and promote easy clean-up. Place chopped items in the basket in one, even layer. Place grill basket onto the hot grill with wooden handles hanging outside the grill to avoid scorching. Grill each side of the basket the same amount of time. Cook time will vary depending on the items you chose to grill (seafood vs. veggies/meat).