I made some from scratch brownies the other day, they turned out terrible-- well the edible parts tasted mostly fine, just a little dry. Overall it was very disappointing, sometimes its challenging to live at 6900 ft.
The following day I had to break my funk, I made chocolate chip cookies, I knew I could make that over a mile high. They turned out beautiful and tasty. My five year old ran around the yard shoving his mouth full of cookies yelling, fresh baked cookies!