Combine the non-dairy milk and water. Warm to 115ºF / 46ºC.
Add the psyllium husk to the milk mixture and stir well. Set aside to gel for 5 minutes.
Combine the gluten-free flour, sugar, instant yeast, xanthan gum, baking powder, and salt in the bowl of a stand mixer. Stir well.
Add the milk mixture, melted vegan butter, and maple syrup to the dry ingredients. Using the hook attachment, stir on low speed until the dry ingredients are incorporated. You may need to scrape down the sides of the bowl a couple of times.
Once the dough reaches a shaggy state with no dry bits remaining, increase the speed on the mixer to medium low and mix for 5 full minutes.
Lightly dust your work surface with cornstarch. Turn the dough out onto the surface.
Divide the dough into 12 equal sized balls (mine were 82 grams). Using your fingers, pinch and pull the undersides to shape each ball round.
Spray a 9x9 baking pan with non-stick cooking spray. Place the dough balls with the seam side down in the dish. They should barely touch.
Cover with a dish towel and leave to rise in a warm place for 75-90 minutes, until the rolls have doubled in size.
When there is 20 minutes remaining in the proof time, preheat the oven to 375ºF / 190ºC.
Use a pastry brush to brush the melted vegan butter on top of the rolls. Bake for 22-25 minutes until the tops are golden brown and the internal temperature reaches 200ºF / 93ºC.
Remove from the oven and cool in the pan for about 10 minutes before serving.
Notes
Room temperature: These dinner rolls can be stored at room temperature in an airtight container or bag for up to 3 days.
Freezer: To freeze, let the rolls cool completely and then place them in a freezer-safe bag. They can be kept in the freezer for up to 3 months. To reheat, simply thaw at room temperature and warm in the oven or microwave before serving.