Wait for the cooktop to cool to a safe temperature.
Wipe as much of the burnt sugar from the cooktop as possible with a rag and hot, soapy water. Rinse with a clean rag to remove any soap residue.
Saturate the spot with an all-purpose cleaner. Let the cleaner sit on the sugar spot for five minutes, then scrub with a nylon scrubbing pad. Rinse the area with a clean, damp rag to remove any residue.
Mix ¼ cup white vinegar and ¼ cup warm water in a bowl. Put the bowl in the microwave for 30 to 45 seconds to heat the mixture.
Pour some of the vinegar mixture directly onto the stain. Let it sit for 10 minutes.
Scrub the spot with a nylon scrubbing pad until the rest of the sugar is gone. Use a plastic pan scraper to chip away any tough spots. Rinse and dry the area well.
Clean the cooktop with a stainless-steel cleaner after removing all of the sugar. Spray the cleaner onto a soft cloth and wipe in the direction of the grain. Buff dry with a clean cloth.