I've never liked raising my dough in the oven. I want to see it
progress and peek above the top of the bowl as I am "multi-tasking",
to use a now overworked phrase that any good cook/baker has always
performed. Anyways, I place regular ceramic tile (left over from the
kitchen floor) on top of the glass top electric stove and turn the
burner/s on for ten seconds. I then place a pot holder on top of the
tile and the covered bowl of dough on top of that. The radiant heat
from the tile works great. If needed, the burner/s can be turned on
for a few more seconds later in the raising process.