01 -
Beat butter and powdered sugar until light and fluffy, about 5 minutes with stand mixer or 7 minutes with hand mixer, until mixture becomes very light in color.
02 -
Beat in almond extract until completely combined.
03 -
Whisk flour and corn starch together, then mix into butter mixture in three additions, mixing just until combined each time.
04 -
Transfer dough to airtight container and chill 2 hours.
05 -
Roll chilled dough into 1-inch balls. Press with powdered sugar-dipped fork and add sprinkles if desired.
06 -
Bake at 300°F for 10-12 minutes until bottoms are very lightly golden. Let cool on baking sheet before transferring.