Place brownies in freezer 30 minutes. Remove brownies from pan, using foil to lift; peel foil from sides of brownies. Cut into 24 rectangular bars, 6 rows lengthwise by 4 rows across, each about 1 1/2 by 3 1/4 inches. Gently insert stick into end of each bar, foil from bars. Place on cookie sheet; freeze 30 minutes.