In a large bowl, combine the first eight ingredients. Crumble turkey over mixture and mix well. Shape into eight 1/2-in. thick patties.
Using long-handled tongs, moisten a paper towel with cooking oil and lightly coat the grill rack. Grill burgers, uncovered, over medium heat or broil 4 in. from the heat for 8-10 minutes on each side or until a thermometer reads 165° and juices run clear. Serve on rolls with lettuce and tomato.