Stir together flour, sugar, baking powder and salt. Add the grated butter and stir just until the butter is incorporated.
Pour buttermilk on top of flour mixture. Stir just until combined -- you don't want to overwork the dough. The dough will look crumbly like so.
Turn the dough out onto a floured surface. Gently use your hands, to combine the dough and pat the dough into a 1-inch-thick rectangle.
Fold the left side to the middle and then the right side on top like folding a letter to create more flaky layers.
We flatten the folded dough, rotate and repeat again three times. This helps create lots of wonderful layers.
We cut our the dough into circles with a cookie cutter, brush with more buttermilk and bake in a 450-degree oven.
While the shortcakes bake, we cook our apple filling on the stove until it's nice and bubbly -- it's so delicious!
As the last step, we whip together heavy cream, maple syrup and vanilla -- just like that, we have our maple whipped cream!