Maybe go for Sahale, or Dragontail, or Argonaut, or Maude or Black Peak. All of those mountains will give you amazing views and amazing scenery without the chance of you falling in a crevasse. Seriously, you don't have to do the volcanoes to see the Cascades.
Also, if your not completely set on climbing, maybe go for a stroll on the Pacific Crest Trail. In my opinion, hiking the PCT is one of the best ways to see the Cascades.