Prepare the corned beef

• Rinse the corned beef well and pat it dry.
• Crush the spices from the included spice packet.
• Coat the meat with mustard and press the crushed spices over it.

Start the slow cooker

• Place the corned beef in the slow cooker with the onion.
• Pour in the Guinness and top up with beef broth until the liquid almost reaches the top of the meat.

Cook low and slow

• Cover and cook until the meat is tender.

Roast the vegetables

• Chop the carrots, potatoes, cabbage and onion and spread them on a baking tray.
• Drizzle with olive oil and season with salt, pepper, garlic powder and onion powder.
• Roast at 220 °C for 20 to 30 minutes.

Slice and serve

• Take the meat out of the slow cooker and slice it.
• Serve over the roasted vegetables and top with a little butter so it melts in.