Preheat the oven to 400 degrees F. Line a baking sheet with parchment paper.
To a large bowl add the flour, sugar, cinnamon, nutmeg, allspice, baking powder, and salt. Mix to combine.
Grate 1/2 cup of frozen or chilled butter using a box grater. Using two knives, cut the butter into the flour mixture to incorporate it without over-mixing.
To a separate bowl add the egg, kefir, and vanilla extract. Whisk to combine.
Peel and dice 2 granny smith apples (~1 cup diced) and add it to the wet ingredients.
Add the wet ingredients into the dry and mix together until just combined. Avoid overmixing- the dough should be lumpy and uneven. Form the dough into 2 balls.
Press each ball of dough into a circle about 1" high on a floured surface. Using a large chef's knife, cut each circle into 6 even pieces and place the scones onto the parchment-lined baking sheet.
Bake for 18-20 minutes or until golden brown.
In the meantime, make the maple glaze by adding powdered sugar, vanilla extract, maple syrup, and almond milk to a bowl and whisking together.
Let the scones cool on a wire rack for 20 minutes before adding a drizzle of the maple glaze over top. Enjoy!