Pistachio Butter Cookies

These piped butter cookies are the kind you’d find in a European bakery tin. The dough is rich with a full cup of butter, enriched with egg yolk and cream, then pushed through a star-tipped pastry bag into decorative rosettes topped with chopped pistachios.

No leavening in this recipe. No baking powder, no baking soda. The cookies hold their piped shape perfectly because they don’t rise or spread. What you pipe is exactly what you get out of the oven.

The egg yolk (no white) keeps the dough tender and golden without adding the structure that a whole egg would. Combined with cream and vanilla, each cookie practically dissolves on your tongue.

Kitchen Tips

• Butter must be at room temperature, not melted. Soft butter creams smoothly and pipes without clogging the tip. Cold butter makes lumpy dough that won’t push through.
• Fill the pastry bag only half full. Overfilling makes it hard to control and the heat from your hands softens the butter too quickly.
• Use a large open star tip (¾ inch) for the classic ridged rosette shape. A round tip works but loses the elegant texture.
• These are fragile when warm. Let them cool completely on the baking sheet before moving to a rack.

Variations

• Replace pistachios with finely chopped almonds or hazelnuts for a different nutty finish.
• Dip the cooled cookies halfway in melted dark chocolate for a dressed-up holiday version.
• Add a teaspoon of almond extract alongside the vanilla for a more pronounced nutty flavor.