Put the old cookie sheet in the sink add a little water and add some baking soda and peroxide. Leave it soak for about 1 hour and the grime should wipe right off.
By coville123 from brockville, ontario
This page contains the following solutions.
Do you have broiler pans or cookie sheets that have build up on them so bad that no matter how hard you scrub them it will not come off? Don't worry, my husband showed me a way to clean them where I don't even have to touch them.
I have two young boys and a very busy life, I found keeping nonstick foil on my cookie sheets and storing them in the oven to be both a money and time saver. I have two cookie sheets; one large and one smaller one.
Aluminum cookie sheets do much better if you just wash them in the sink. Do not put in dishwasher ever or scrub hard with a metal scrubber.
I was making coffee cake muffins and the brown sugar dripped down into the cups. I filled the tins with water and stuck it back in the hot oven until the oven cooled. Then I took the tin out and washed with soap and water.
