Beef and Potatoes Braised in Guinness

• olive oil, for cooking
• 3 large onions, sliced
• 4 × 175-225 g (6-8 oz)

Preheat the oven to 170°C/325°F/gas 3. Heat some olive oil in a large frying pan, add the onions and cook over a medium heat for a few minutes until tender and golden brown. Spoon the onions into a casserole dish.

Toss the beef in the flour and season with salt and pepper. Heat