Melt the butter in a large pot over medium-high heat.
Add the orzo, garlic, ½ tsp salt, and ½ tsp pepper to the pot and cook while stirring for about 1 minute.
Stir in the water and bring to a boil. Reduce heat to medium-low and simmer uncovered, stirring often, about 7 to 8 minutes or until the liquid is absorbed.
Take the pot off the heat and stir in the Parmesan cheese until melted. Add salt & pepper to taste.
