1. Clean, peel and boil the potatoes, then drain them.
2. Transfer them to a bowl and mash them with a fork.
3. Add the rest of the ingredients and mix well.
4. Transfer the mixture to the greased pans (or to the mold if you're using a single large one).
5. Bake them at 180ºC/350ºF for 30 minutes on top.