This hearty dish brings together the best of both potato gratin and seafood casserole. Sustainably sourced smoked Atlantic mackerel, high in heart- and brain-benefitting omega-3s, is paired with a rich creamy sauce, peas, and a mashed potato crust. It’s also a main dish that can be prepared ahead of time and simply reheated in the oven before serving. Swap out the mackerel for fillets of smoked wild salmon, if you prefer.
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Pull the pin
If using whole smoked mackerel, be sure to carefully remove any pin bones when breaking apart the flesh. These can present a choking hazard when hidden within the casserole.
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This collection was originally published in the October 2025 issue of alive magazine.
