In small bowl, mix yogurt, ... into 3/4-inch thick burger. Make deep depression in ... high heat. Add burgers, cook until golden brown. ... tomato and sliced feta.
1. Chop onion in quarters. ... until center of burger reaches 165°F on thermometer. Serve ... . Makes 20 burgers. Nutrition (per serving (1/2 ... less than 1g sugar.