Cottage Pie

Name: Cottage Pie
Prep time: 15 min
Cook time: 1 h 30 min
Total time: 1 h 45 min
Cuisine: British
Ingredients: 500g (1.1lb) Ground Beef (beef mince); 1 Onion ((finely chopped)); 1 Celery Stalk ((finely chopped)); 1 Apple ((finely chopped)); 1 Red Pepper (capsicum) ((finely chopped)); 375ml (1½ cups) Chicken stock; 200g (7oz) Carrots ((peeled and cut into 1cm chunks)); 650g (1.4lb) Potato ((peeled and cut into rough chunks of approx 3-5 cm cubed)); 60ml (¼ cup) Milk; 20g (1½ tbsp) Butter; 1 Egg