Steak and Stilton Pie

Ingredients

• 400 g lean, diced stewing steak, (all visible fat removed)
• 1 medium onion, (peeled and sliced)
• 2 medium carrots, (peeled and sliced)
• 1 stick of celery, (sliced)
• 150 g button mushrooms ((or larger ones, thickly sliced))
• 1 clove of garlic, (peeled and crushed)
• ½ tsp dried thyme
• 1 tbsp Henderson's relish ((or Worcestershire sauce))
• 1 tbsp plain flour
• 1 beef stock cube, (made up with 600ml boiling water)
• 1 red wine stock pot
• 75 g Stilton cheese, (crumb)
• black pepper
• 1 medium egg, (beaten)
• 2 x 40g ready rolled sheets of filo pastry
• low calorie cooking spray