Start by preheating the oven to 350 degrees and line a baking sheet with parchment paper.
Mix lemon cake mix, eggs, oil, and vanilla in a large mixing bowl until combined (option to use a hand mixer or fork).
Use a 2 tablespoon cookie scoop to create cookie dough balls and place them about 2” apart on the baking sheet.
Bake for 9-10 minutes.
When the center is set or the edges start to brown, remove from the oven and let cool on the baking sheet.
While the cookies cool, make the lemon glaze by combining powdered sugar, 2 tablespoons lemon juice, and vanilla.
Add extra lemon juice if needed, but add the third tablespoon slowly and stir while you add so it doesn’t get too thin.
Transfer cookies to a cooling rack and drizzle or spoon lemon glaze over each cookie (you may want to put parchment paper or foil under cookies so the glaze is easy to clean up).
Garnish with lemon zest (optional) and let cool completely.
ENJOY!