Preheat oven to 350 degrees F. and line a baking sheet with parchment paper.
In a medium mixing bowl whisk the sugar, flour, vanilla beans, baking powder, and salt together. Using a pastry blender or knife and fork, cut the cold butter into the mixture until it resembles coarse crumbs.
Add heavy cream, vanilla bean extract, and egg white. Mix with a spoon to combine.
Using your hands, knead into a soft dough, doesn’t take long to do this 1-2 minutes.
Roll the dough to make a rectangle, make sure the dough is about 3/4 inch thick. Now using a sharp knife, cut the dough into 8 small triangles.
Place the triangles on the parchment paper and bake for about 10 minutes, or until lightly golden.
Make the glaze by whisking the cream, powdered sugar, vanilla beans, and vanilla together. Once scones have cooled, spread the glaze on top of the scones.