How to clean Black burnt grease on stove top
These articles might be helpful Cindy
Here's an article that might help - https://www.hunker.com/12001248/how-to-remove-burnt-on-grease-from-a-stove-top
Hi Cindy! here is my tried and true way! http://gatheredinthekitchen.com/2018/07/26/how-to-clean-a-glass-cooktop/
The easiest way to clean it is with a Hurricane Turbo cleaner that is a battery operated scrub brush with super power. It is also useful for many other things like shower walls/doors, ovens, tires on the car etc. It will scrub anything clean and we use our own cleaner we prefer that is non-toxic Simple Green. You can get both at Walmart.