Pat the scallops very dry with paper towels
Remove the side muscle if present
Season lightly with salt and black pepper
Heat a skillet over medium-high to high heat
Add a thin layer of oil with a high smoke point
Wait until the oil is shimmering
Place scallops in the pan without crowding
Sear without moving them for 1.5 to 2 minutes
Flip scallops once the bottom is deeply golden
Cook the second side for 1 to 2 minutes
Add butter, garlic, or herbs if desired during the last 30 seconds
Remove scallops from the pan immediately
Serve right away