Take a look:
http://www.whats4eats.com/vegetables/causa-rellena-recipe
It is really good!
PERUVIAN LAYERED POTATO DISH)
This versatile Peruvian potato dish makes a great light meal or a fine addition to a buffet spread.
Causa can be layered with any number of fillings — chicken salad and tuna salad are favorites. Served cold, the dish is often topped with extravagant garnishes and sauces for a colorful presentation.
Causa takes its name from the old Incan Quechua word
kausaq, which means "giver of life," another name for the potato.
Rellena is the Spanish word for "stuffed" or "filled."