Beef, mushroom and Guinness pie - 9Kitchen

Ingredients

• 60g butter
• 1 onion – peeled and sliced
• 2 cloves garlic - finely chopped
• 120g mushrooms – stems trimmed and quartered
• 500g chuck steak – trimmed and cubed
• 2 tbsp plain flour
• 200ml beef stock
• 200ml Guinness
• 1 tbsp Worcestershire sauce
• For pie: puff pastry sheets
• Egg wash: 1 beaten egg mixed with a little milk
• To serve: boiled potatoes