
. From your picture TB i can't work out whether the rice is over cooked or undercooked. I use a glass casserole dish with lid as opposed a metal one used by Natterjak. But we still get the same results. Nothing wrong with the brand of rice you're using. I've used it for years. I have found that rice from my latest bag only needs cooking for 12 mins as opposed to 15 though. I don't think your cooking capabilities are at fault here, it's more about not being able to set the tools to do the job. Setting the oven temp seems a bit hit and miss. You can't really afford this when cooking rice

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A new casserole dish may not be the answer given your settings problem but there is an easy solution to retrieve the situation.
I arrived at this method because i was forced to use an electric hob, which does not lend itself in the slightest to cooking rice by absorbtion, which IMO is the best methiod, hence the oven coming into play. It was derived from cooking perfect rice on a gas hob, whether for 2 people or for twenty plus.
I know you have a gas hob so use that. Use Natterjacks measurements
Oil in saucepan and heat
Add whole spice and fry till aroma given off
Boil kettle of water
Add rice and stir for a min till heated and all coated with oil
Add suggested water volume to rice (Unlike Natterjak i don't use measurments for cooking rice. As long as there's a 1/3 inch of liquid above the rice, it will turn out just fine, big pot or little pot ;D )
Bring back to boil, add salt and stir.
Turn to lowest setting possible where gas is just about on.
Cover top of pan with foil, put on lid and crimp foil to keep steam in.
Cook at lowest temperature for 15 minutes.
Turn off and leave undisturbed for five minutes - DO NOT BE TEMPTED TO PEEK
Remove lid and foil, take out whole spices and add colouring .
Lid and foil back on and leave for fifteen minutes to fix colouring
Remove lid and fork over then replace lid again
This can then be transfered to a warm oven if use is very soon or left to go cold and reheated as required
That should sort out your rice issue

Let us know how you get on