When I was a financially challenged Uni student, I often cooked this cheese & potato snack using a mini toaster oven. However, a non-stick frying pan works better. If you don’t have a non-stick frying pan, you can place a sheet of baking paper in a frying pan, so that the melted cheese won’t stick to the pan. It’s a cheep but yummy snack, that brings back a memory of my Uni days.