Hi Amie,
We haven't tried this even though most of our pots have relatively smooth bottoms. The Whirlpool representative didn't recommend doing this. Also, you have to be careful not to spill certain cooking ingredients such as sugar on the hot surfaces otherwise they will "pit" the glass. It has made us wonder if we should have purchased the traditional cook top with the removeable elements. In summary, the stove/cook top is a fantastic appliance even though we eat microwave popcorn now.
Cheers,
Shaun