When I make a pie crust I use Bob's Red Mill All-Purpose gluten free flour. It's a bean flour and the only thing I have found it's good for.
-8.5 oz flour
-1 tbsp sugar
-1 tsp salt
-1.5 tsp xanthum gum
-1 egg
-8 tbsp butter, cubbed
-some cold water
Add the dry bits to a food processor, pulse to combine, add the butter and pulse a bit. Then add the egg and run it while adding a little water until it comes together in a sticky ball. Turn it out on some plastic wrap, fold a few times, wrap it up, and chill it for 10-15min. Then press/roll it out on a floured surface. Sometimes I get the moisture wrong and need to press it into a tin but usually it rolls up on the pin and out pretty easily.
As for breads I found a roll recipe on theloopywhisk that uses lots of starch and psyilum husk gel to get a nice fluffy loaf. https://theloopywhisk.com/2023/12/02/gluten-free-white-bread/ I sub in potato starch for the tapioca and use it for flatbread and pizza too.
That's a bit disappointing. Hopefully they streamline it for the manga if they get that far.