I use c/a recipe and only cook the rice for 4 mins (it's a bit al-dente)then spread it out on baking tray and leave to dry out in the fridge then later when I want to use it I stick it in the microwave and cook it accordingly.
Its so easy to let it overcook, to me you are better to undercook then microwave accordingly
Regards D/B

, is it ok to use tomatoe sauce