Ha I ended up caving and calling mum! Traveller very similar to yours!

Celery
Carrot
Mushroom
Roast chook
Onion
Garlic
Flour
Butter
Milk
Sour cream or natural yogurt

Tear up roast chook and set aside in a casserole dish. Fry off vegies and layer over chicken. Make a loose roux, then add sour cream or natural yogurt. Season to taste. Pour over chicken and veggies and bake. Serve with rice. Yum!!!