01 -
Set your oven to 350°F (175°C) and cover a baking sheet with parchment paper.
02 -
In a medium-sized bowl, stir together the flour, salt, baking powder, and soda until combined. Leave it for later.
03 -
In a big bowl, beat the softened butter, white sugar, and brown sugar until the texture's light and airy.
04 -
Toss in the egg, lemon juice, lemon zest, and vanilla to the butter mix. Beat everything until it's smooth.
05 -
Slowly fold the dry ingredients into the wet ones. Don't overdo the mixing—just until it comes together.
06 -
Using a cookie scoop or spoon, plop round tablespoon-sized mounds onto your prepped baking sheet, leaving about 2 inches between each.
07 -
Bake in the preheated oven for about 10–12 minutes. You want the edges lightly golden, with the centers firm.
08 -
Once they're out, let the cookies sit on the tray for a few minutes. Move them to a wire rack to finish cooling, then sprinkle powdered sugar on top if you'd like.