01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, leaving an overhang for lifting.
02 - In a large mixing bowl, beat unsalted butter and granulated sugar together until light and fluffy. Add salt, vanilla extract, and almond extract, mixing thoroughly.
03 - Gradually add all-purpose flour to the bowl, mixing until a crumbly dough forms.
04 - Firmly press two-thirds of the dough evenly into the bottom of the prepared pan.
05 - Spread the raspberry jam evenly over the dough base, leaving a slight border at the edges.
06 - Crumble the remaining dough evenly over the jam layer and sprinkle with sliced almonds.
07 - Bake in the preheated oven for 28 to 32 minutes, or until the topping is golden and the almonds are lightly toasted.
08 - Let the bars cool completely in the pan, then use the parchment overhang to lift out and cut into squares.