I found a glass cooktop cleaner that works! I used Autosol, dry paper towels and some elbow grease to poilsh the glass cooktop AFTER I scrapped the burnt marks off with a razor blade. Autosol is meant for non m-food surfaces so wash/rinse the surface well before using the cooktop again. I recommend using cleaning gloves and face mask for safety. Cleaning tip for the kitchen LTKhome