Preheat oven to 375 degrees F.
Scrub the potatoes, prick them several times with a fork, and bake them for 1 hour or until very soft when pierced with a knife.
Remove from the oven and scoop out the insides as soon as they are cool enough to handle.
Place in a large bowl with butter, brown sugar, cinnamon and nutmeg. Mash to a reasonably smooth consistency. Add orange juice, cream, salt and pepper and blend.
Transfer to a baking sheet, top with crushed pineapple, and bake for 20 - 30 minutes to heat through.