Heat oven to 200 degrees. Place a Silpat (French nonstick baking mat) or parchment paper on a baking sheet. Using a mandoline or a very sharp knife, slice apple and pears into very thin translucent rounds (slice pears lengthwise). Do not remove seeds or cores.
Place sugar on a plate; dip both sides of fruit slices into sugar to coat. Transfer slices to baking sheet.
Bake until edges begin to ruffle, about 1 hour. Turn slice over and continue baking until golden brown, about 1 hour more.
Transfer chips in a single layer to a wire rack to cool and harden.
TRIED THESE BUT WAY TO MUCH SUGAR FOR ME, WILL GO BACK TO OLD METHOD OF USING THE DRIER MACHINE, THAT WAY NO SUGAR. DRIED THEY ARE GREAT IN OATMEAL FOR BREAKFAST