Place a clean 8–10 inch non-stick skillet over medium-low heat.
Add 1 tablespoon unsalted butter to the warm pan and swirl to coat the bottom; heat until shimmering but not browning.
Crack 2 large eggs directly into the pan without letting them touch (or crack into a bowl first and gently slide in).
Let the eggs cook undisturbed for 2 to 3 minutes, until the whites are mostly set and opaque but the yolks remain runny.
Use a thin, flexible spatula to gently flip each egg in a quick motion.
Cook the flipped eggs for 30 seconds to 1 minute, until the white film over the yolk turns opaque and the yolk stays liquid.
Slide the eggs onto a plate and immediately season with a pinch of salt and a pinch of black pepper.