Yes, I highly recommend it. If not the pre-cut liners you can also simply cut a piece of parchment paper to fit inside the wire basket. Regular parchment paper that we use to line cake tins would work too. This is because when you place the cookie dough inside to bake, the wires from the basket cut through the dough and it sticks to the cookies while baking which becomes troublesome to remove the cookies once they are baked and cooled. So highly recommend it.