Add olive oil to a medium saucepan and heat over medium heat for 1-2 minutes.
1 tbsp olive oil
Add the orzo and stir to combine.
1 cup orzo
Cook, stirring often until the orzo becomes toasted (~3-5 minutes).
Add the water and salt, and bring the pot to a boil for 1 minute.
2 cups water, 1/2 tsp sea salt
Reduce the temperature to medium-high, and cook uncovered for 8-10 minutes while stirring occasionally. The orzo will be ready when all the liquid has cooked out.
Remove the pan from the heat and stir in the Parmesan.
2/3 cup finely grated Parmesan
Notes
If you choose to not toast the orzo, reduce the olive oil to 1 tsp. Add it with the orzo, salt, and water in step 4.
A serrated bread or cheese knife makes the cleanest cuts for slicing the small tomatoes in half.