You could try it with cod or haddock instead of hake if you prefer. Heat the olive oil in a terracotta cazuela or a shallow flameproof casserole. Add the onions and garlic and cook gently until soft.

Adding dumplings to this simple, slow-cooker chicken casserole makes it great value when feeding the family. Equipment and preparartion: For this recipe you will need a 6.5 litre/11½ pints ...