Preheat your oven to 375F.
Prepare the vegetables by grating the carrot, and chopping the tomato and leek. Be sure to clean the leek well as dirt has a way of getting into the leeks!
Heat the oil in a cast iron pan on medium high. Add the chopped leeks and fry for around 3 minutes stirring frequently.
Add the grated carrot, chopped tomato and rice to the skillet. Stir and fry for around 5 minutes.
Crumble the stock cube in a small bowl, then add the salt, pepper, and garlic powder. Stir to combine.
Now add hot water and these seasonings to the rice and vegetables and stir well to combine.
Place this in an oven which has been preheated to 375F and then bake for 20 minutes.