Shortbread Cookies

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1. 1Step 1: In a stand mixer fitted with a paddle attachment, beat the butter and vanilla extract until creamed.
2. 2Step 2: Add the confectioners' sugar and salt; mix until combined.
3. 3Step 3: Scrape down the bowl, then add the flour while beating on low. Scrape the bowl once more and mix until combined.
4. 4Step 4: Shape the dough into a rectangular prism, wrap in plastic, and chill until firm, at least an hour.
5. 5Step 5: Preheat the oven to 350°F (177°C). Use a sharp knife to cut 1/2-inch thick slices.
6. 6Step 6: Place the slices, spaced at least an inch apart, onto a baking sheet lined with a silicone mat or parchment paper.
7. 7Step 7: Use a fork or skewer to indent a pattern onto the top.
8. 8Step 8: Bake for about 10 minutes, rotating the baking sheet in the oven halfway through.
9. 9Step 9: Transfer to a wire rack to cool.