Since you like mouse stories and The Tale of Desperaux you may like these titles too:
The mouse and the motorcycle by Beverly Cleary.
A reckless young mouse named Ralph makes friends with a boy in room 215 of the Mountain View Inn and discovers the joys of motorcycling.
Runaway Ralph by Beverly Cleary.
Ralph runs away looking for freedom but winds up a prisoner at a summer camp.
Poppy by Avi.
Poppy the deer mouse urges her family to move next to a field of corn big enough to feed them all forever, but Mr. Ocax, a terrifying owl, has other ideas.