In a medium-size saucepan melt the butter over medium-high heat.
Add the garlic and spinach to the pan and cook, stirring often, until spinach wilts, about 2 minutes.
Stir in the orzo, water, ¼ tsp salt, and ⅛ tsp pepper then bring to a boil.
Reduce the heat to medium-low and simmer, stirring occasionally, about 8 minutes or until the pasta has absorbed all the liquid.
Take off the heat and stir in the feta cheese. Add salt & pepper to taste.
