When you bake using a loaf pan, or even a cake pan, you do not want the cake to stick. The best trick for this rather than greasy cooking spray is this. Get your pan, a stick of butter, and flour. Take your stick of butter and coat the inside of the pan on all edges and corners. Just rub the butter everywhere. Now, sprinkle in some flour and turn it on all sides so the flour sticks to all the edges and corners. Have fun making that cake!