Pasta - Creamy Chicken Mushroom And Leek Gnocchi Bake

Ingredients

• 450 g Fresh chicken cut into bite sized pieces
• 1 Leek chopped fine
• 150 g Button mushrooms
• 1 Onion med finely chopped
• 2 Garlic cloves finely chopped
• 2 tbsp Olive oil
• 500 g King Edward Potatoes baked
• 100 g Flour
• 1 Egg yolk
• 1/2 tsp Salt
• 1/2 tsp Ground white pepper
• 300 ml Milk
• 100 ml Double cream
• 60 g Parmesan cheese grated
• 35 g Butter unsalted
• 10 g Flour
• 1 Chicken stock cube or gel pot
• 2 tbsp Fresh parsley chopped
• 1/2 tsp Freshly ground black pepper