Chunky Chicken Leek Mushroom Pie Recipe

Ingredients

• 500 g Chicken breasts
• 2 tbsp Olive oil
• 30 g Unsalted butter
• 2 Leeks (sliced, white and light green parts only)
• 2 Garlic cloves (minced)
• 200 g Chestnut mushrooms (sliced)
• 2 tbsp Plain flour
• 300 ml Chicken stock
• 150 ml Double cream
• 1 tsp Fresh thyme leaves
• 1 tsp Sea salt
• 1/2 tsp Black pepper
• 1 Puff pastry sheet (ready-rolled)
• 1 Egg (beaten, for egg wash)