Yes, that's what I do with my frozen barbecue that I've sealed using my FoodSaver. Bring a pot of water to a boil, turn off the heat, drop the sealed bag into the water, and let warm through.can you use the sealed bags from the machine as seal a meal? I.E. take the stew frozen in the bag and put it in simmering water to warm, than once warmed into a serving vessel?