So, I've been making a big roast and eating it cold during the week. It's awesome and easy. Today I went to the store and bought 4 pounds of bottom roast - but for some reason the butcher sliced it into smaller pieces (which I didn't notice until it was too late). So, now I have 4 pounds of sliced roast meat. I know how to a cook a roast - but I have no idea how to cook it when it's presliced like this...

What is the easiest and quickest way to cook this? Could I just fry it up in a pan, slice by slice?