i cut a large potato into chips ( skin on) did them in the microwave for about 8-10 mins, meanwhile i heated up a baking tray, sarayed with a tiny bit of oil ( i have one of the ww oil sprayers that gives out a measured amount, half a teaspoon). spread the chips on the hot tray , sprayed the remianing oil on and baked for about 25 mins on the hottest setting. i had them with a can of princes stewing steak in gravy, and peas.