This thread is now a bit dated since the requester asked in 2003 but what the heck. [:D] [;)]
My two recommendations are Cafe Diablo in Torrey, UT just west of Capitol Reef National Park
and Kiva Koffeehouse on Highway 12 as you enter Staircase Escalante territory between Capitol Reef and Bryce Canyon National Park…
You won’t be disappointed by either.