To toast a small amount of nuts, place them in a small cast iron skillet directly on the rack of an covered grill directly over medium heat. (Or on medium heat of regular range top.) Heat for 5 to 7 minutes, stirring occasionally, or until nuts are aromatic, lightly golden and toasted. (Be sure to watch carefully to avoid burning.) Toast larger amounts of nuts in a shallow baking pan in a 350°F oven for 5 to 10 minutes, stirring once or twice.