olive oil
salt
pepper
Pre-heat the oven to 400 degrees. Peel and chop sweet potatoes or yams into bite size cubes. Toss lightly in olive oil and spread out on a large cookie sheet so the potatoes are 1 layer deep. Sprinkle with salt and pepper and bake in the oven for approximately 1/2 hour. (depends on the oven so watch closely after 20 minutes) Test with a fork for softness before removing from the oven.