Candez, I can't believe I found this thread! I was just thinking about those amazing quesadillas at La Hacienda in dear Imperial and decided to try to google-up some memories.
My family lived there in the late '50's/early '60's and those years are special to me for many reasons including, of course, those amazing quesadillas. (I attended Ben Hulse School, grades K-2.) I returned to La Hacienda a couple of times as a grown-up and they were just as delicious. Do you remember the large painting of a senorita grieving for her fallen matador? I hope to see it one day again at the El Centro location.