Oats I think is too high in fiber content for me to digest appropriatelyCan you do oats?
I also have to eat gluten free as I found I'm allergic to wheat (after years of unidentified digestive issues - basically GERD) In the US we have a quality brand called Bobos that makes very dense and filling oat bars and other oat-based products. But any oats would be great.
I always eat oats room temperature or slightly warm. I never eat cold cereal as that's a major trigger for my GERD.