Chicken, Mushroom & Leek Casserole

Name: Chicken, Mushroom & Leek Casserole
Ingredients: 1 leek; 1 tbsp vegetable oil; 1 onion, sliced into rings; 1 tbsp wholegrain mustard; 200 g (7 oz) mushrooms, sliced; 1 pack chicken casserole; 500 ml (17 fl ozs) warm water; 4 large chicken thighs; 2 tbsp single cream

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By: Schwartz (via Schwartz)

Original Publish: Oct 22, 2020

Last Updated: Mar 1, 2026

Ingredients

1 leek
1 tbsp vegetable oil
1 onion, sliced into rings
1 tbsp wholegrain mustard
200 g (7 oz) mushrooms, sliced
1 pack chicken casserole
500 ml (17 fl ozs) warm water
4 large chicken thighs
2 tbsp single cream

Instructions

Pre-heat the oven to 180°C, 350°F, Gas Mark 4.
Heat oil in a frying pan, add leeks and onions and sauté until vegetables are soft. Add mustard to the pan and fry for a further minute.
Transfer to a casserole dish and top with mushrooms. Combine the Schwartz Chicken Casserole Recipe Mix with water in a jug then pour over the vegetables.