Bombas de Camarones y Papas

• 2 lb. potatoes
• 3 oz. unsalted butter
• 2 egg yolk

Peel and cook the potatoes until tender in salted water. Drain thoroughly, then mash with 2 oz. of the butter, the egg yolks, grated cheese, parsley, and salt and white pepper to taste. Set aside.

Heat the remaining butter in a frying pan and sauté the onion until tender, but not b