Whether you have a ceramic cooktop, or a gas stove with a ceramic base under the burners, it’s likely that you have crisped food burned on. Try sprinkling baking soda over the entire cooktop and then spraying it with hot water. Let this sit and then come back and scrub it later. This will take off all the grime. Then you can use the fancy cooktop cleaner to polish (we love Barkeepers Friend). For your oven, if it has a self cleaner, turn it on before you go to bed tonight. They usually stink up the house and tie up hours of time, so I like to leave these for bedtime, and just give it a quick wipe down in the morning.