My meat is usually frozen when I cook it so I just add a 1/2 cup or so of water to the ground beef and cover it on the stove top over a high flame. This more or less boils the beef and thaws it at the same time. Drain the meat and water when all the beef can be separated with a spatula and return it back to the stove to brown, drain again and eat.
For
chicken breast, if they are frozen I boil them in water add seasoning and chicken bouillon. Boil them for about 40 minutes or so until done. Whatever I don't eat that night gets put into a sealed baggie to lock in the moisture. They last for days this way and are even moist after I microwave them to reheat.