In a frying pan with lid, melt butter over medium/high heat. Add rice and allow brice to "brown". The rice will begin to have white spots on the rice. This is what you are looking for. Let the rice brown for about 5 minutes, stirring and watching.
When rice has browned (turned mostly white), add cumin and quickly stir to combine.
Add broth cilantro and lime juice. This will cause a lot of steam quickly. Bring it all back to a boil and then put the lid on the frying pan and turn to low (#1).
Allow to sit on low for 25 minutes to cook rice. The cilantro will all settle on top and the flavors will have all combined together.
To serve, give a quick stir to fluff rice and enjoy!