That is terrible! I heard they are expensive to replace. I have a glass top & I worry about droping something on it. I will start using my timer more to avoid that same disaster you had. My DH & I both have hand held timers we use them to help us not forget. Add - sewing room just for a minute set timer.
I did burn a hole in countertop, glass pan burned thru hot pad. DH cut out burnt spot & inserted glass cutting boad in counter, what a save.