Old Fashioned Recipe

https://blogfreely.net/culinaryartsextr/bring-the-water-to-a-fast-simmer-and-turn-off-the-warmth

Pour the brown-buttered tomatoes over the salmon, smearing the butter and mustard seeds evenly over the salmon’s flesh. Bake until just-cooked via and the flesh flakes, about 15 minutes (or an instant-read thermometer