Can I dehydrate pineapple in the oven?
Preheat oven to 225 degrees. Line two baking sheets with Silpats (French nonstick baking mats) or parchment paper.    Peel pineapples. Using a small melon baller, remove and discard "eyes." Slice pineapple very thinly; place slices on baking sheets. Cook until tops look dried, about 30 minutes.
Preheat oven to 225 degrees. Line two baking sheets with Silpats (French nonstick baking mats) or parchment paper.    Peel pineapples. Using a small melon baller, remove and discard "eyes." Slice pineapple very thickly; place slices on baking sheets. Cook until tops look dried, about 30 minutes.