Yeah my buddy did this with a library book once, it was a mess. He tried the microwave for like 10 seconds and it made the glue smell weird, don't do that lol. What worked was putting paper towels between every single page and leaving it under a fan for a whole day. @paul_stone29 you gotta be patient with it, rushing just tears the paper. He still had a few wavy pages but at least they weren't stuck together anymore.

My buddy's cheap mixer died mid-pour last summer.

What brand did your brother use in Phoenix?