Remove steak from packaging and dice into even-sized cubes. Place some flour in a bowl and season with salt and pepper. Toss steak in flour to coat, shaking off any excess. Heat a little oil in a large pan until hot and brown cubes for 2-3 minutes, turning occasionally. Transfer to a casserole dish.
Oven casserole 180°C/ Fan 160°C/ Gas 4 Add your choice of vegetables and stock to casserole dish and cover. Place in the centre of preheated oven for 2 hours 30 minutes until tender.
Tip: For perfect browning, avoid crowding the pan by frying the cubes in small batches.