Hash of Lamb with Potato Border

• 1 pound cooked lamb, diced
• 6 large potatoes
• 2 tablespoons

Peel and boil potatoes in usual way. Mash 4 potatoes with butter and beaten egg, and season to taste with salt and freshly ground black pepper. Force a border of mashed potatoes through a piping bag round a shallow ovenproof dish.

Sauté finely chopped onion in olive oil until transparent; dice remaining 2 cold boiled potatoes and add with diced lamb to onion; continue cooking until gold