I know that two posts in one day is unusual for me, but I just had to share this great way to clean the oven. Especially when you are having "overly critical of your housekeeping people" over for supper (like anyone I have given birth to or married, for example).
Step One: Buy a cherry pie from Lorraine Nicholson (can be substituted with strawberry rhubarb)
Step Two: With a very sturdy egg flipper or a cement trowel - scrape all the crud off the bottom of your absolutely cold oven. Depending on the thickness, this may take some time. Safety glasses would be a good idea.
Step Three: Vacuum up all the cruddy pieces.
Step Four: Tell overly critical people that the crud stains left on the bottom happened when you baked the cherry pie.
Your Welcome.
/bye