In an electric mixture cream together the butter, sugars, vanilla, cardamom, and salt. Thoroughly incorporate all the ingredients but don’t over mix, the butter should not be fluffy.
Add the egg yolk and mix until combined.
Add the flour in two stages, mixing until just incorporated.
Form the dough into a log and wrap well, refrigerate for at least two hours or overnight (freeze any unused portions of the dough for later use).
Preheat the oven to 325 and line two baking sheets with parchment, waxed paper, or a silpat.
Allow the dough to soften slightly at room temperature before rolling. Divide the dough into four sections and roll out one section at a time, between two sheets of parchment, to desired thickness. Return the rolled out dough to the refrigerator to chill for a few minutes before cutting.
Cardamom Sugar Cookies with Apple Caramel https://www.recipefiction.com/2014/12/cardamom-sugar-cookies-apple-caramel.html