How to clean an oven

After a long period, grease can get caught and cooked between the double windows. You can usually remove them with a screwdriver to clean them. Beware it may void a warranty if that is an issue though.

Caked on grease is best removed by letting the glass soak in detergent (like dawn) if it comes all the way out. If not, you can wipe it down with a detergent on a sponge. Then pat it dry with paper towel and use a solution of white vinegar and water to make it shiny and get the baked bits off. If your warranty won't allow you to remove the double glass, you can at least get it cleaner by using this method on the inside and outside. This won't solve what is jammed between the double window, but will probably make it so you can see inside.