Context: I'm a poor and lazy college student. I have breaded frozen pieces of cod from costco. I like to bake them in my toaster-oven on aluminum foil to avoid having to clean the baking dish/tray. This brand (janes) is the only kind they have at costco and the problem is the center of the breading sort of sticks to the alumnium foil.   How can I avoid this? I've thought about applying a small quantity oil , but rather put the effort and money immediately into trying that, I'd like to consult the experts. 
Parchment paper is much less prone to food sticking to it. I use it for lots of sticky or fragile food, such as fish or sticky chicken wings.   If you usually have your fish entirely covered in aluminum, you can do the same with parchment paper, this is called a papillote. Example 