very easy Cornish pasty

INGREDIENTS

• 2 tbsp olive oil
• 1 large onion, roughly chopped
• 2 garlic cloves, crushed
• 4 springs of thyme
• 250g beef mince
• 1 medium size potato, diced (about 7x7x7mm)
• 1 large carrot, diced
• 1 tbsp flour
• 500 ml beef stock
• salt, pepper
• chopped parsley
• 1/2 cup frozen peas
• 500 g Ready roll short crust pastry
• 1 egg, beaten