بيتيفور

Beat the cold butter and powdered sugar using an electric mixer until light and creamy.

Add egg yolks and vanilla, and mix for 1 minute until just combined.

Add the sifted flour and salt, and gently mix by hand to form a soft dough.

(For chocolate version, replace ¼ cup flour with ¼ cup cocoa powder).

Pipe the dough using a piping bag into desired shapes (e.g., rosettes or lines).

Bake in a preheated oven at 180°C for around 8 minutes on the middle rack (depending on the oven).

Let the petit fours cool completely before filling.

Sandwich the cookies with apricot jam or melted chocolate as desired.