Pat the salmon fillets dry with paper towels
Season both sides with salt and pepper
Heat a skillet over medium-high heat
Add a small amount of oil to the skillet
Place the salmon skin-side down if it has skin
Press gently for a few seconds to keep it flat
Cook without moving it for 4 to 6 minutes
Flip the salmon carefully
Cook the other side for 2 to 4 minutes
Add butter, garlic, or herbs if desired during the last minute
Remove the salmon when it flakes easily and is cooked through
Transfer to a plate and let it rest briefly before serving