Either do it youself or get your fishmonger to cut off the dark skin of the soles and discard. Smear a little olive oil on to two ovenproof dishes, paint some olive oil on to both sides of the soles and season with a little salt. Put the soles into the cooking dishes light skin side up, put in the oven
Picture until only just golden brown which will probably take around 8 to 10 minutes
Picture .