So, I have no before, during, or after picture (or this would so be a Pinterest pin, lol) BUT I came across the best stovetop cleaner after finding one *on Pinterest, of course* that said to use baking soda and peroxide.
Mine works better, haha. But sprinkle baking soda all over and then use a water bottle and mist spray until the baking soda is wet. Let sit for a little bit & then take a paper towel .... little bit (not much) of elbow grease and rub. Viola, cleanest my stove has been in a long time. And one of the burners had some pretty nasty burns on it!!!