Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking pan or line it with parchment paper for easy removal.
In a large mixing bowl, cream together the softened butter and granulated sugar until light and fluffy. Add the salt, eggs, vanilla extract, and almond extract, mixing well to combine. Gradually add in the flour, mixing until a soft dough forms.
Spread the dough evenly in the prepared pan, pressing it down to form the crust. Bake in the preheated oven for about 15-20 minutes, or until lightly golden. Remove from the oven and let it cool slightly.
Once the crust has cooled slightly, pour the lemon pie filling evenly over the crust. Use a spatula to spread it out evenly.
Bake the bars for an additional 20-25 minutes, or until the filling is set. The edges should start to pull away slightly from the pan.
Allow the bars to cool in the pan on a wire rack. Once completely cooled, you can prepare the glaze.
In a medium bowl, whisk together the confectioners' sugar, vanilla extract, almond extract, and lemon juice until smooth. Adjust the lemon juice for your desired consistency.
Pour the glaze over the cooled lemon bars, spreading it evenly. Allow the glaze to set before cutting into squares.