Combine the warm milk, sugar and yeast in small bowl and let sit until bubbly, about 5 minutes.
To make the psyllium gel, combine the psyllium husk and water in a small bowl and let sit about 2 minutes.
Using a stand mixer with the paddle attachment, mix the gluten-free flour, sugar, salt and baking powder on low speed until combined.
In a separate bowl, whisk together the greek yogurt, egg, melted butter and water.
Slowly pour the yogurt mixture, psyllium gel and yeast mixture into the flour mixture, and mix until combined, scraping down the sides of the bowl as needed. Increase the speed to medium and beat until the dough is sticky and uniform, about 5 minutes.
Using a small cookie scoop or two spoons, scoop out 30, roughly tablespoon sized, balls onto a lightly gluten-free floured surface.
Grease 10 of the 12 cups of a 12-hole muffin tin. With lightly floured hands, roll each ball into a smooth ball and place 3 dough balls into each of the 10 greased muffin cups. Loosely cover with plastic wrap and let rise in a warm spot, until the dough fills up the muffin cup and the top of each roll has risen roughly ½ inch above the top of the pan, around 45 minutes. Meanwhile, preheat the oven to 375°F (190°C) and place the kettle on to boil.
Remove the plastic wrap from over the rolls. In a small bowl, whisk together the egg, water and salt and brush the top of each roll with the egg wash using a pastry brush. Fill the remaining 2 empty muffin tins half way full with boiling water; the steam will give some added oven spring. Bake for 25 minutes, until the rolls are golden brown.
In a small bowl, combine the melted butter and honey. As soon as the rolls are removed from the oven, brush the top of each roll with the honey butter. Let the rolls cool for 5 minutes, then remove rolls from the muffin tin and place on a cooling rack to further cool for another 5 minutes. Serve warm.