Add the spinach to the skillet and cook for about 2-3 minutes until wilted. Stir occasionally to cook it evenly.
Prepare the eggs:
In a small bowl, whisk the eggs with a pinch of salt, pepper, and milk (if using).
Cook the eggs:
Pour the whisked eggs over the spinach in the skillet. Let it sit for a few seconds to start setting, then gently stir or fold the eggs around the spinach to scramble. Lower the heat to avoid overcooking.
Add cheese:
When the eggs are mostly set but still slightly runny, sprinkle the shredded cheese over the top. Cover the skillet and let the cheese melt for about 1-2 minutes.
Season and garnish:
Once the cheese is melted, remove from heat. Add paprika or red pepper flakes for some spice, if desired. Garnish with fresh herbs if you like.
Serve:
Serve hot directly from the skillet or plate the dish. Pair it with toast or fresh fruit for a complete meal.