Spread the mixture over the top of the salmon filets until fully coated, top with salt and pepper to taste. Add lemon slices to each filet if desired and a tablespoon of butter over each of the lemon slices.
4-5 Tablespoons unsalted butter
Cover with wrap and refrigerate for a half hour or longer (you can also marinate overnight).
Bake salmon for 20-30 minutes, checking at the 20-minute mark for doneness. The bake time will vary depending on how thick your filets are. If the salmon flakes easily when pressed with a fork in the thickest portion of the filet, but still looks moist inside, then it is done cooking. Stiff or firm salmon is considered overcooked.
We initially used New Zealand King Salmon for this recipe. It was so buttery and melts in your mouth, but just about any good quality salmon will do the trick. Center cut salmon is excellent here because it’s uniform in size, meaning each filet will cook evenly together.
The best way to test for doneness when it comes to salmon is to use an instant-read thermometer. Inserted into the thickest portion of the filet, the temperature should read 125-130F for medium and 140F for well done. If you don't have a thermometer, gently press the filet in the center with a fork. If it flakes easily and still looks moist on the inside, it's done.