First put your cubes in a bowl with a small amount of water and put in microwave long enough to melt cubes.Remove and stir till all dissolved.
Put enough oil to coat bottom of dutch oven.
Add your cup of rice to heated oil and stir fry it till appears translucent.
Now add your dissolved cubes mixture to the rice and stir.
Add your 3 cups of chicken broth and cumin,zest and lime juice.Stir
If you would like to add meat to this, now is the time,I use chopped chicken with this.If using add and stir.
You can stir this only till it comes to a boil,when this happens you put the lid on and turn fire to low.
Let it cook till all the liquid evaporates(you can tell this by using a fork to center and push the rice aside),taste and see if rice is done if not to your liking then add either more broth or water a small amount at a time till its done.You still do not stir.
Turn fire off when done and let sit for at least 5 minutes, then you can fluff your rice.
*This is just the basics for this rice,you can add rotel,green chilis,hamburger,onion what ever you like in your spanish rice.