01 -
Combine softened unsalted butter and margarine in an electric mixer on medium speed until the mixture is light and fluffy.
02 -
Gradually add the granulated sugar, about 1/2 cup at a time, alternating with the eggs, mixing well after each addition.
03 -
Blend in the vanilla extract until fully incorporated.
04 -
In a separate bowl, whisk together all-purpose flour, salt, and baking powder.
05 -
By hand, gently fold the dry ingredient mixture into the butter mixture in small portions until just combined. Avoid over-mixing.
06 -
Cover and chill the dough in the refrigerator for approximately 15 minutes.
07 -
Place the baking sheet in the refrigerator for 15 minutes to ensure cookies adhere better when pressed.
08 -
If the dough remains too soft, chill slightly longer; if too stiff, allow to rest at room temperature briefly.
09 -
Fill a cookie press with the chilled dough and press onto an ungreased, chilled baking sheet.
10 -
Sprinkle the cookies with desired sprinkles or sanding sugar prior to baking.
11 -
Bake in a preheated oven at 350°F (175°C) for 10 to 15 minutes until set and lightly golden.