01 - Pat salmon fillets dry using paper towels and season both sides evenly with salt and black pepper.
02 - Warm olive oil in a non-stick or cast-iron skillet over medium-high heat until shimmering.
03 - Place salmon fillets skin-side down in the pan, pressing gently with a spatula to maintain contact, and cook undisturbed for 4 to 5 minutes until skin is crisp and flesh is mostly opaque.
04 - Turn salmon over, add butter to the pan, and cook for an additional 2 to 3 minutes, basting fillets with melted butter until just cooked through.
05 - Remove from heat immediately and plate with lemon wedges; garnish with fresh parsley if desired.