Preheat oven to 500 degrees F.

Heat a small frying pan over medium high heat.  Add butter and seitan and saute until warmed and slightly browned.  Remove from heat and toss with hot sauce.  Adjust to taste.

Place pizza shells on a parchment lines baking sheet.  If using your own dough, roll out to two small pie crusts and par bake for about 10 minutes.  Sprinkle cheese over the crust evenly, top with green onions and celery.  Spread Buffalo seitan over top and bake in oven for 10 minutes until crust is done.