Preheat oven to 400 degrees. Line a cookie sheet with parchment paper.
In a large bowl, shift together flour, oats, baking powder, salt, cinnamon, cardamon, and nutmeg.
Cut the cold butter with a fork into the flour mixture until it is mixed in and resembles coarse crumbs.
In another bowl, mix together yogurt, brown sugar, half and half, vanilla extract, and almond extract.
Add the apples to the yogurt mixture.
Mix yogurt/apple mixture into the flour mixture, just until combined.
On a clean surface, knead dough about 5 to 6 times.
Form into a round ball and place on cookie sheet, pat out until about 9 inches diameter and ¾ inch thick.
Cut into 8 - 12 wedges. If you separate the pieces you will have a crispy edge all around the scones instead of just the outer edge.
Bake for 20-25 minutes.
Remove from oven and cool on sheet for about 5 minutes and then remove to cool on cooling rack.
When slightly cooled, frost with almond glaze and top with sliced almonds.