I love using my cast iron skillet to make this recipe. If using a cast-iron skillet: Preheat oven to 400°F. Preheat skillet on the stove with a little avocado oil or butter. Sprinkle salmon with sea salt. Place dill & thinly sliced lemon on top of salmon. Cook on medium heat for 4 minutes. Bake for 7 minutes in the oven, then broil on low for 4 minutes. Salmon is cooked when it flakes easily. Cooking time will vary with the thickness of the fillet. Alternatively, you can bake your salmon in a glass baking dish for approximately 10-12 minutes at 400°F & then broil for an additional 4 minutes. Again, cooking time will vary on the thickness of the fillet.