I cheat and use it as a coating
. For example:
Cut chicken into small pieces/cubes/goujons/whatever.
Grab two bowls - put a beaten egg in one, and some polenta in the other. Put them close to each other.
Use one hand to grab a piece of chicken, dunk in the egg, and put in the polenta bowl.
Use the other hand to roll the chicken piece around in the polenta. Take out, jiggle (over polenta bowl) to shake off excess and put on a plate or straight onto the baking tray.
Whack in oven for apx 20mins.
Should result in yummy breadcrumb-style chicken pieces (but with way less salt).
This should also work with bigger pieces of chicken (or fish, or whatever else you want to use) if you want, but I haven't tried it.
I suggest using separate hands, for the separate bowls, as otherwise you quickly end up with sticky mess on both hands - and it is lumpy, wastes the polenta & hard to clean off.