Add the butter to the insert of the InstantPot and select the saute function. When the butter melts, add the onion and salt. Cook, stirring often, until the onions is starting to turn translucent, 2-3 minutes.
Add the rice and cook for 30-45 seconds, stirring constantly.
Stir in the garlic and broth.
Secure the lid. Select Manual and decrease the time to 22 minutes.
After the cook time is over, let the pressure naturally release. Fluff the rice with a fork and stir in the parsley. Serve immediately.
Notes
Pressure Cooker: this recipe can easily be made in a stovetop pressure cooker. Decrease the cooking time to 22 minutes.