Combine the rice, 1 3/4 cups water, the salt, and butter in a small heavy-bottomed saucepan.
Bring to a boil over medium heat; reduce the heat to low, stir once, and adjust the heat to simmer covered tightly, for 15 minutes. Turn off the heat and allow the rice to sit covered for 5 minutes.
Add the parsley, dill, scallions, and pepper. Fluff with a fork, and serve warm.