Preheat oven to 350 degrees F / 177 degrees C.
Heat 1 tablespoon olive oil in a large pan on medium heat for 4 minutes. Season 4 salmon filets with 2 teaspoons sea salt. Place salmon in pan skin side down and sear for 3 minutes. Flip and sear for 3 additional minutes until both sides are crisp.
1 tablespoon olive oil, 2 teaspoons sea salt, 4 salmon filets
Place salmon on a 9 X 13 inch glass baking dish, reserve.
In a medium bowl place ½ cup butter, 1 tablespoon Dijon mustard, 1 tablespoon lemon juice, and 2 tablespoons fresh dill. Whisk until all ingredients are combined and chill for 10 minutes.
½ cup butter, 1 tablespoon Dijon mustard, 1 tablespoon lemon juice, 2 tablespoons fresh dill
Top each portion of salmon with the butter mixture and bake for 8 to 15 minutes.
Cool for 3 minutes before serving.