# Step-by-Step Guide:
01 - Preheat the oven to 450°F. Line a baking sheet with parchment paper and set aside.
02 - Carefully separate the yolks from the whites, keeping each yolk whole; transfer each yolk to an individual small bowl and refrigerate briefly.
03 - In a clean, dry mixing bowl, beat the egg whites with an electric mixer (or a robust hand whisk) on high speed until stiff, glossy peaks form.
04 - Gently fold the salt, pepper and any chosen optional additions (cheese or herbs) into the whipped whites with a silicone spatula, maintaining as much volume as possible.
05 - Spoon the whipped whites onto the prepared sheet in two equal mounds; use the back of a spoon to create a well in the center of each mound to receive the yolk.
06 - Bake the whites for 3 minutes until lightly set and beginning to colour at the edges, then remove the sheet from the oven.
07 - Gently nestle a yolk into each well and return the sheet to the oven; bake an additional 3–5 minutes until the yolk is just set but still soft. Serve immediately, garnished with extra herbs if desired.