Mel and I were at Walmart Monday. He looked for and found a small mandolin. He bought me a big fancy expensive one a few years ago but we never drag it out because it's big and you have to change blades to adjust thickness while this one you turn a dial. Anyhow, a little while ago he went to kitchen to, I thought, check the pot roast. He was gone a while and when he returned he presented a plate of microwave potato chips, some with chili seasoning some nothing. Some sprayed lightly with olive oil some plain. They were delicious. Then he made sweet potato chips. Yumm! He used a flat chip making plate we paid too much for from Pampered Chef, but which I later I found I could buy for half on Amazon. Really easy and this mandolin would fit flat in a drawer and be useful. Took 3 to 5 min to cook each batch. Low cal, high fiber ESP sweet potato. He made some sweets with cinnamon sugar. nice treat costs only the cost of a single potato per batch.
Velda
PS he said key to crispness is drying chips with paper towel before cooking.