Dice the scallion, both greens and whites, keeping the whites separate.
In a medium pot over medium heat, melt the 1 Tbsp butter.
Add the scallion whites and cook 1-2 minutes or until fragrant.
Add the ¾ cup rice and toast for another minute, stirring to coat in the remaining butter.
Add the 1½ cup water and a pinch of salt and cover with a lid. Allow the mixture to come to a boil, then turn down the heat and allow to simmer 15-20 minutes.
Once the rice is ready, fluff with a fork, and sprinkle in scallion greens. Toss to combine and serve warm.