Step 1

To make the crust: Combine the flour, confectioners’ sugar, and salt in a large mixing bowl.

Step 2

, Cut the butter into 1/2” cubes and scatter over the flour mixture. Work the butter into the flour – using your fingers, a pastry cutter, or fork – until the mixture looks sandy.

Step 3

, Add the egg yolk along with the water, gently incorporating them into the flour-butter mixture to form a cohesive dough.

Step 4

, On a lightly floured work surface roll the dough into a 12” circle. Gently transfer the dough circle to a 9” tart pan, pressing it into the corners. Trim the dough with kitchen scissors so that you’re left with just 1/2” of overhanging dough around the perimeter of the tart. Fold the overhang down to reinforce the sides of the pastry then use the tines of a fork to poke holes across the bottom.

Step 5

, Freeze the crust for 30 minutes. In the meantime, preheat the oven to 400°F.

Step 6

, Line the crust with parchment or foil and fill with pie weights, rice, or your favorite blind-baking weights.

Step 7

, Bake the crust on a baking sheet (to catch any butter drips) with the weights for 20 minutes then remove the parchment or foil with the weights and bake for 5 to 10 minutes longer, until the edges and bottom of the crust are lightly golden.

Step 8

, Remove the crust from the oven and allow it to cool while you prepare the filling.

Step 9

, Reduce the oven temperature to 350°F.

Step 10

, To make the filling: Beat together the butter, sugar, and salt until pale and fluffy. Stir in the flours, whole egg and egg white, and almond extract. Set aside.

Step 11

, Spread the raspberry jam evenly into the bottom of the slightly cooled crust. Spoon the almond mixture over the jam. Gently spread it to the edges of the tart, and smooth out the surface. Sprinkle the sliced almonds evenly on top.

Step 12

, To bake the tart: Bake the tart for 35 to 40 minutes, until the top is golden brown and a toothpick inserted into the center comes out clean.

Step 13

, Remove the tart from the oven and allow it to cool completely on a rack. Serve at room temperature.

Step 14

, Store the tart, well covered, at room temperature for several days; freeze for longer storage.