Slice the chicken sideways into strips (around 3cm thick) and place in baking dish
Mix olive oil, lemon juice, minced garlic, sumac, salt and pepper well and pour over the chicken
If you have the time, marinate in fridge for an hour covered
Slice the potatoes and place above the chicken in the baking dish. Drizzle with olive oil and sumac
Preheat oven to 180C, once hot place the casserole covered into the oven
Bake for 45 min covered, uncover and broil for another 15 until potatoes are red and crunchy
