Peel and cube the yams. Place in a 9X12 pre-oiled baking dish. Spray or drizzle oil (I use butter) on them. Cook at 350 for 30 minutes or until done. Mash the yams, add the coconut milk, agave nectar, pineapple, pecans, and seasonings. Mix well, put back in the baking pan, sprinkle with the reserved pineapple and pecans and serve.