Preheat oven to 400F. Line a baking sheet with parchment.
Grate your cold butter on the large holes of a box grater into a small bowl. Place in the freezer to chill for at least 10 minutes. We want the butter to be frozen so that it does not melt when mixed in with everything. The butter flakes are what give the scones their light, crumb texture.
For the filling, in a small bowl, mix together the coconut sugar, butter, and cinnamon. Set aside.
In a large bowl, mix together the flours, coconut sugar, baking powder, baking soda, and salt.
In a medium bowl, whisk together the milk and yogurt.
Add the chilled grated butter into the flour mix and use a rubber spatula (or your hands) to mix it in with the flour. If any large chunks remain, break them up with your fingers. You want little chunks of butter to remain!
Pour the yogurt mixture into the dry ingredients along with the raisins and use a rubber spatula to gently mix just until combined (try not to over mix). Use your hands to gather the dough together into a ball.If the dough is not coming together add milk, 1 teaspoon at a time, until it does. Shape into a ball, incorporating any bits at the bottom of the bowl.
Transfer to a floured counter or cutting board and use your hands or a rolling pin to flatten into a ½-inch thick rectangle (if hands/pin are sticking, dust with flour). It doesn’t have to be perfect!
Spread the cinnamon sugar mixture on top of half of the dough, then fold the dough onto itself to form a square. Cut into 8 small squares and transfer to the baking sheet. The size/amount of scones will depend on how thin/thick you rolled it. These are very free form so don’t worry if they aren’t all the same size or shape!
Bake for 12-15 minutes or until golden brown. Let cool, then top with frosting, if using (see how-to make frosting in recipe note).