The hill country is georgeous. You dont' have to go on the windy roads if that's not your thing. Good scenery abounds in that area. Watch out for deer!
Some books worth reading:
The bikers guide to texas by Waldman
Backroads of texas by Hodge and Syers
Motorcycle journeys through texas by Davis
These books detail excellent rides with places of interest and places to eat.
2009 Stratoliner (mine), 2008 Stratoliner (hers), 2010 Harley Rocker, 2002 Honda VLX