Preheat oven to 350℉
Remove Salmon from marinade. Pat dry.
Season with Salt and Pepper.
Heat a cast iron pan, over medium heat. Once hot, melt Butter in pan, and place the Salmon, face side down, in the pan. Cook, undisturbed, for 3 minutes.
Remove pan from heat. Using a fish spatula, gently turn the Salmon over, so the seared face is up and the skin side down. Pop into oven and cook for 4-8 minutes, depending on thickness. You will know it is done when you start to see the white "milky" substance in the layers of fish when looking at the edges of the fillets.
Remove from pan to plates for serving. Ladle some of the Bourbon Sauce over fish, if desired. Enjoy!