Set the oven to 400°F (200°C).

In a small bowl, combine the softened butter, and salt.

Mix until all ingredients are well incorporated.

Pat the salmon fillets dry with paper towels to ensure the butter adheres properly.

Place the fillets skin-side down on a baking sheet lined with parchment paper or lightly greased aluminum foil.

Evenly spread the butter mixture over the top of each salmon fillet, ensuring a generous coating.

Place the baking sheet in the preheated oven.

Bake for 12-15 minutes, or until the salmon is opaque and flakes easily with a fork.

Cooking time may vary depending on the thickness of the fillets.

Remove the salmon from the oven and let it rest for a couple of minutes.

Transfer to serving.