Step 1

Heat the oven to 475°F. When the oven is hot, put the butter on a rimmed baking sheet and sprinkle with salt and pepper. Put the pan in the oven for the butter to melt, about 1 minute. Watch it the whole time: As soon as the foaming stops, remove the pan.

Step 2

Put the salmon in the seasoned butter, skin side down, and sprinkle the top with more salt and pepper. Return the pan to the oven.

Step 3

Roast until the salmon is just cooked through, 8 to 12 minutes. To see whether the fish is done, stick a paring knife between the layers of flesh; the center should be bright pink and still a little translucent. Garnish with the parsley and serve.