Sift the flour into a medium bowl, grate in the butter and mix it all together, add in the yolk, sugar and vanilla extract, prepare the dough and let it chill it in the fridge for about 20-30 minutes. Form a crust in a small baking pan.
Peel and slice the apple and lay it over the crust, sprinkle the cinnamon, brown sugar over the top, brush with the melted butter and add some almonds if you please.
Bake the tart for approximately 30 minutes or until golden brown at 200C or 400F.
