For the filling
1 kg of sweet potatoes
4 tablespoons of butter
1 cup of warmed milk
Salt and white pepper to taste
For the filling
400g of shredded beef (you can use leftover roast)
1 chopped onion
2 tablespoons of olive oil
For dusting
1 tablespoon of grated Parmesan cheese
For brushing
1 egg yolk
For the filling
1 kg of sweet potatoes
4 tablespoons of butter
1 cup of warmed milk
Salt and white pepper to taste
For the filling
400g of shredded beef (you can use leftover roast)
1 chopped onion
2 tablespoons of olive oil
For dusting
1 tablespoon of grated Parmesan cheese
For brushing
1 egg yolk
Cook the sweet potatoes in boiling water until they're very tender
Drain, remove the skin, and while still warm, mash with a potato masher
Add the butter and milk, and mix well
Season to taste and reserve
Prepare the filling: cut the beef into thick slices and chop coarsely
Fry the onion in olive oil until it starts to caramelize
Add the beef and cook over low heat for about 10 minutes
Spread half of the mashed sweet potatoes onto a greased 20cm square baking dish
Lay the filling on top, then cover with the remaining mashed sweet potatoes
Smooth out with the back of a spoon
Brush with egg yolk and dust with Parmesan cheese
Bake in a hot oven (200°C) that's been preheated, until the surface starts to caramelize
Serve still warm
Serves 4.