I came up with this idea out of sheer need. I had no aluminum foil and I knew it wasn't on sale anywhere. Needing some to cover a lasagna I was making, I used what I had on hand. Which was a metal cookie sheet. I just put it on top of the baking dish and it worked great!
Now, whenever something needs to be covered, I just use my cookie sheet. This is now one less thing I have to buy from the store. Yay!
This post is linke up to Thrifty Thursday