This is the perfect mix of creamy, layered potatoes and smoky, peppered mackerel. Then let the oven do the magic.
Tweaked from a recipe by Nigel Slater
You will also need -
a baking dish - something like a lasagne dish would be good
Keywords: mid-week, comfort, creamy
Find it online: https://marmaladeandme.com/smoked-mackerel-dauphinoise/