Not sure the flavors went well together - the garbanzo beans felt a bit out of place - but everybody ate up so it couldn't have been that bad :) I added some american cheese (kept the parm) and didn't have any cornstarch but the sauce was thick nonetheless so I doubt you even need it. A nice variation on mac and cheese.
This is an interesting dish, but the recipe requires tweaking. I added herbs and used flour and milk as the other reviewer suggested. I'll make it again and continue to experiment to get the right flavor.
My family didn't think this recipe was as bad as previous poster. I made ours with brooth and instead of evap. milk and corn starch I used regular milk and flour and made a white sauce before adding the beans. Also, I am not a big chickpea fan, so I use black beans and added corn. I think next time I might change the seasoning a little.