French
Beat the eggs with the milk, salt, and pepper until just blended.
Melt the butter in a non-stick pan over medium heat, swirling to coat.
Pour in the eggs and let them set slightly, then gently push the edges toward the center, tilting the pan so raw egg flows underneath.
When the surface is still a little soft, scatter the ham or vegetables and cheese over one half.
Fold the omelette over the filling and cook for a few more seconds.
Slide onto a plate and serve immediately.