Preheat oven to 350 F. Line 2 cookie sheets with parchment paper and spray with non stick spray.
In a large bowl, mix flours, salt and sugar.
Add almond extract and melted butter. Mix until just combined. The dough will be quite crumbly, but it will come together when you form the cookies, using the heat of your hands.
Form into balls and place on prepared cookie sheets. Flatten slightly with the palm of your hand. Press a sliced almonds into the center of each cookies.
Bake for 20 minutes.
Leave to cool on the sheet trays for 10 minutes before removing.