Baking soda can save your day when you need to clean your cooktop. First, bring a bowl of hot water, liquid dish soap, baking soda, and a cleaning rag.
Then, fill a bowl with hot tap water and mix it with some dish soap and soak the rag in the bowl.
Finally, apply a generous amount of baking soda all over the cooktop and let it sit for 15 minutes, then, gently scrub away in circles.