Preheat the oven to 375 degrees. Clean the fish without removing the head. Trim each fennel to just above the bulb, and wash. Heat about a tablespoon of olive oil into a saucepan, add baby fennel ...

Break at the head and put aside. Carefully lift the remaining two fillets onto the plate. Coat with the herb butter and surround with the potatoes, onions and fennel, which should be deliciously ...