SWISS POTATO CASSEROLE

Ingredients :

• 1 kg of potatoes boiled with skin for 10 min., cooled and peeled.

• 50 gr. of grated Gruyère cheese,

• 75 gr. of butter,

• 1 medium onion, finely chopped,

• Salt and pepper

Preparation :

• Grate the potatoes on a coarse grater. Mix with the cheese.

• Melt the butter and brown the onion. Add to the mixture. Season with salt and pepper.

• Wrap in aluminum foil and freeze.

• To defrost, melt butter and pour the cake into it.

• Slow heat, 15 min. on each side.