Preheat the oven to 325. Add the pecans required for the frosting on a sheet pan and place in the oven to toast for about 10 minutes while the oven is preheating. Once the pecans are fragrant and lightly toasted, remove and set aside.
To make the dough, add all the dry ingredients to a large bowl and mix well.
Add in the butter and using a fork or pastry blender, work in the butter until it has broken down to pea size.
In a separate small bowl, gently whisk the egg, egg yolk and maple extract, then add the eggs to the dry ingredients and mix well.
Lastly, add in the chopped pecans and mix until evenly dispersed.
Line a cookie sheet with parchment paper and sprinkle it with tapioca starch. Pour out the dough onto the cookie sheet, and sprinkle with a bit more tapioca flour on top. Pat the dough into a circle, about 7-8 inch round. It doesn’t have to be perfect, but you want the dough on the thicker side so that they have a beautiful rise to them.
With a very sharp knife, carefully cut a “plus sign” into the dough, creating 4 sections. Now, cut each section into 2 triangles. Think of cutting a “plus sign” then an “X”into the dough. Do not move the individual scones at this point. Since these are grain-free, the dough is too fragile for moving.
Place in the oven and bake for 20 min.
The scones are not quite finished baking yet. At this point, remove the scones from the oven, and very carefully take a knife and run it down the cuts you previously made. Gently separate the scones away from one another. Then bake for another 6-8 minutes.
While the scones are baking, add all the frosting ingredients to a bowl and whisk until smooth.
Allow to cool, then generously frost the scones, then top with the toasted chopped pecans.