Combine the sliced almonds and sugar in a food processor and pulse until fine in texture.
Sift together the flour, baking powder and salt in a medium-sized bowl.
Add the sifted flour mixture and the butter to the nut and sugar mixture in the food processor.
Pulse together until you get a very crumbly mixture.
Add the egg, egg yolk, lemon zest and pulse until large clumps form.
Next, transfer the pastry dough onto a work surface and knead it into a cohesive ball.
Grease a 9-inch round tart tin with a removable bottom.
Using your fingers, press in approximately 2/3 of the crumbly pastry over the bottom and up the sides of the tart tin.
Sprinkle the bottom crust with the crushed, dry amaretti cookies.
Spread the apple cranberry mixture evenly over the bottom layer.
Crumble the remaining pastry dough over the filling.
Bake in a preheated oven at 350°F for approximately 40 minutes.
Transfer onto a cooling rack and dust with powdered sugar before serving.