I followed the basic recipe from the Good Housekeeping  Cookbook for basic bread. After the first proofing, I baked it in a loaf pan at 400F for 30 mins. The bread turned out flat and burnt at the bottom. What am I doing? 
Granny Smith apples are rather tangy. I would reccommend Pink Lady's or Braeburns.  Let me know if you have any questions 