01 -
Heat oven to 375°F and line baking sheets with parchment.
02 -
Cream butter and sugar until light and fluffy, about 1 minute.
03 -
Mix in egg and lemon zest for 30 seconds.
04 -
Mix in baking powder, salt, then gradually add flour until combined.
05 -
Scoop tablespoon-sized balls, place 1 inch apart and flatten with glass.
06 -
Bake 8-10 minutes, rotating halfway through.
07 -
Cool 5 minutes on sheets, then transfer to wire racks.
08 -
Mix confectioners' sugar and lemon juice, spread on cooled cookies.