Had a BGE-L for about a week. Tonight fired it up to make some lamb and after supper my wife wanted to put some dessert in it. It's a large cookie that bakes in a cast iron skillet .... batter and chocolate ... basically a big choc chip cookie. She usually bakes it at 350 for about 12 minutes. I stabilized the BGE at 350 and used the plate setter figuring that would basically make the BGE more like an oven. Anyway, after 12 minutes it had hardly set up and I'm left wondering what I did incorrectly. Any thoughts are appreciated. Thanks in advance.