Make the hamburger steaks into an oval shape so they fit the skillet better.Don’t over work the beef getting it shaped or it will get tough. Now push your thumb into the middle of the patty to make a thinner spot in the middle to help it cook more even.In a screaming hot cast iron skillet put a few drops of canola oil.Salt and pepper the one side of the beef and put the seasoned side down. Now season the top side and don’t touch it !!! Don’t be mashing it ,or turning it or anything!!!!! Just let it cook! In about three minutes you can look, if it’s ready to turn now you can, and lower the heat and finish cooking to desired doneness.