Ingredients
Method
- Cook the chicken in butter and oil, remove it, then cook onion, carrots, celery, and potatoes, stir in flour, whisk in stock and milk, and simmer with the chicken until potatoes are tender and chicken reaches 74°C (165°F). Stir in peas, cool for 10 minutes.

- Tip into a 23 cm (9 inch) pie dish, cover with cold pastry, seal and vent, brush with egg.

- Bake at 200°C (400°F) for 30-35 minutes, until deep golden and bubbling. Rest for 15 minutes before serving.

Notes
Make the filling up to 2 days ahead and refrigerate, covered. Freeze unbaked assembled pie for up to 2 months, baking at 190°C (375°F) for 55-65 minutes from frozen. Leftovers keep for up to 3 days refrigerated, and should not sit at room temperature for more than 2 hours. Reheat only once, until steaming throughout.
