place fish pieces on a will oiled baking tray
mix together half the jar of pesto (or all of it, depending on how many pieces of fish you are using - one jar will do approx 4 pieces) with the breadcrumbs and the grated cheese
spread generaously on top of each fish piece
bake in the oven for about 20 mins, at 180...or until golden brown.
serve with salad, crusty bread or new pots