Quick to make and very pretty to behold, this easy weeknight dish has more verve than most. The roasted bell peppers turn sweet and golden, while olives add a salty note that goes nicely with the mild, flaky fish and a garlicky parsley dressing. If you can’t find hake, cod or flounder make fine substitutes, though you may have to adjust the roasting time. The thicker the fillets, the longer they will take to cook.
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