Potato Cakes Filled with Cheese

• 4 1/2 lbs potatoes, 2 kilos de papas
• 1 finely diced white onion, 1 cebolla blanca finamente picada
• 4 tablespoons oil, 4 cucharadas de aceite
• 1/2 cup grated cheese, 1/2 de queso rallado
• 2 egg yolks, 2 yemas de huevo
• salt, sal al gusto

Directions:

1. 1
   ENGLISH:.
2. 2
   Boil the potatoes and mash, or use leftover mashed potatoes.
3. 3
   Saute the onion in oil until very soft, mix the cooked onions and the egg yolk in with potatoes,.
4. 4
   Shape the potato mixture into equal sized balls.
5. 5
   Poke a hole in each ball and stuff with the cheese, then seal the hole. Flatten into patties.
6. 6
   They work better when chilled before sauteing in oil until nicely browned.
7. 7
   Note:.
8. 8
   The cheese may also be mixed in with the potato and onion mixture before the patties are made.