01 - Preheat oven to 350°F. Line an 8-inch square baking pan with parchment paper, allowing for an overhang to assist with removal.
02 - In a large mixing bowl, use a hand mixer or stand mixer to cream together the unsalted butter and granulated sugar until the mixture is light and fluffy. Add salt, vanilla extract, and almond extract, then blend until well combined.
03 - Gradually add all-purpose flour to the creamed mixture, mixing just until a crumbly dough forms.
04 - Press two-thirds of the dough evenly into the prepared pan, ensuring a compact and level base.
05 - Evenly distribute the raspberry jam over the dough base, leaving a slight border at the edges.
06 - Crumble the remaining dough evenly over the jam filling. Sprinkle sliced almonds across the top.
07 - Place the pan in the preheated oven and bake for 28 to 32 minutes, or until the surface is golden and the almonds appear lightly toasted.
08 - Remove pan from oven and allow the bars to cool completely before lifting out and slicing into individual pieces.