A goodly tip for keeping ovens easy to clean.
Bicarbonate of soda; pour a tablespoon into a container. mix into a paste with water, and then spread it on the surfaces of your oven panels. It looks messy, but believe me that when the next time you come to clean the oven, you will not have to use the spray oven cleaner. Just soapy water and the baked on residue, comes off in a jif