General Recipe Trouble Shooting

Not sure whether the error was in choosing flavors or technique or both. So I was reading about some cheeseburger contest that Bobby Flay eventually won, and so I had cheeseburgers on the brain when I went to the store. Wanted to get all chefy and forget recipes so I just picked up a couple of poblanos, white mushrooms and a shallot. Goat cheese and of course chopped meat. I started the mushrooms first in a stainless steel skillet with equal parts oil and butter.