Combine warm milk with brown sugar, stir until sugar is almost dissolved. Add yeast, stirring until incorporated. Set aside in a warm place for 10 minutes, or until foamy.
In a large bowl, combine flours, rice bran, protein powder, flax meal, xanthan gum, and salt. Add canola oil, stirring until well distributed.
Pour in yeast/milk mixture, egg, and vanilla extract; stir until well combined. .
Cover with plastic wrap, set aside in a warm spot to rise for an hour or two, until about doubled in size
In a large, deep pot, heat 2-3″ of canola oil to 350 F (180 C). While oil is heating, divide dough into 6 equal sized pieces.
Use clean, wet hands to flatten and shape each dough ball into a long, thin oval, about 1/4-1/2″ thick. Allow each to rest on a clean work surface as you form the rest.
Working with one pastry at a time, carefully transfer to the preheated oil. Allow to fry for 1-2 minutes , or until golden on the underside. Gently flip and repeat, cooking until evenly golden.
Transfer fried pastry to a baking sheet lined with paper towels, blot to remove excess oil.
Spread and top as desired, serve immediately!