Most brands like GE Appliances suggest that you use medium or heavy cookware in order to get the best cooking experience from a smooth glass cooktop. Also, it is highly recommended that you should use flat bottom pans instead of non-flat pans.  Flat bottom pans will give you an easier time cooking with a glass cooktop since it will enable a quicker heat transfer. And besides, non-flat pans can crack the glass of your cooktop. If you want to know more about the proper type of cookware you should use, here’s a helpful guide from GE Appliances.