Chicken Dumpling Pie

Ingredients

• 750 g boneless chicken thighs, chopped into large chunks
• 4 tbsp plain flour
• 2 tbsp olive oil
• 250 g bacon, diced
• 1 brown onion, diced
• 2 cloves garlic, minced
• 1 stick celery, diced
• 1 carrot, diced
• 1 tbsp tomato paste
• 2 bay leaves
• 1/3 cup chopped flat leaf parsley
• 750 mL chicken stock
• 200 g mushrooms, sliced
• Table salt and black pepper
• 2 cups self-raising flour
• 80 g butter, chopped
• 60 g cheddar cheese, grated
• 2 tbsp chives, finely chopped, plus extra to garnish
• 2/3 cup milk
• 1 egg yolk, beaten
• 20 g parmesan, grated