Soak the cedar plank submerged in warm water for 30 minutes to 1 hour.
Preheat the oven to 400℉.
Line a sheet pan with aluminum foil. Place the cedar plank(s) on the foil-lined pan and place the salmon, skin side down on the plank(s). Make sure the full salmon filet is on the plank and not hanging off the side. Season with salt and pepper.
Place the pan in the middle of the preheated oven and bake it for 20 minutes.
While the salmon is baking, mix the mustard, honey, and bourbon in a small bowl.
After 20 minutes, remove the pan from the oven and brush each of the salmon filets with ~ 1 tbsp. of the honey mustard sauce. Return the pan to the oven and bake another 5 to 10 minutes or until the filet reaches and internal temperature of 140℉.
Notes
You should have room on the sheet pan to add potatoes and another vegetable to roast along with the salmon. A one pan dinner!