how long does it take to cook a frozen hamburger on the grill?
Place the seasoned, frozen patties on the grill and flip every 3 to 5 minutes. Keep an eye on things as they sizzle and cook. If you encounter flare-ups, shout “oh mama!!” and move the burgers to a separate area and wait a minute for things to settle back down. Total cook time: 15 to 25 minutes.