Best Answer: try ammonia
let sit,,,go outside while it works
or,,,,,,use dry detergent powder,,like borax,, on a slightly moistened sponge, clean cloth .= a mild abrasive than takes off grease nicely,with no glass scratches
I have had my glass top stove now for 21 years. I clean it regularly with a damp sponge and Dawn dish detergent. When the top gets burnt-on stuff on it, I use a regular straight edge razor blade and lots of 70% (or better) isopropyl (rubbing) alcohol. It still looks like new! I never use any thing abrasive on it, not even something like Norwex marble paste!