Preheat your oven to 150C / 300F / Gas mark 2 and get 2 large non stick baking sheets to hand. If you don't have a non stick sheet very lightly grease your baking sheets.
In a small bow mix your sugar and spice together then place to one side.
I am lucky and have a vegetable mandolin to do the hard work for me. If you don't have one using a sharp knife very thinly slice your apples 1 to 2 millimetres thick. Slice all three of your apples up.
Place your apple slices on the baking sheets and sprinkle half of the sugar and spice mix over them and pop them in the oven for 20-30 minutes. You are looking for them to have started to curl up around the edges and turn a very light olden colour.
After 20-30 minutes take the trays out and flip the apple slices over and sprinkle the remaining sugar and spice mix over the apple slices. Swap the trays about in the oven and bake for another 20-30 minutes.
Once baking time is up remove them from the oven and carefully place the chips on a cooling rack. Once cool, store at room temperature in an airtight container for up to one week and happily snack away.