Minced beef pie & minty mushy peas - Good Food Middle East

Ingredients

• 1 onion, chopped
• 350g carrots, chopped
• 3 celery sticks, chopped
• 1 tbsp olive oil
• 500g pack lean minced beef
• 2 tbsp tomato purée
• 1 tbsp Worcestershire sauce
• 350ml beef stock
• 1 egg, lightly beaten
• 375g ready-rolled puff pastry, quartered or left whole, depending on dishes used
• 350g frozen peas
• 1 tbsp mint sauce