Mix the oil, egg, sugar, lemon zest, and juice in a bowl.

Incorporate very well.

Once done, mix the flour, salt, and baking powder. Sift into the previous mixture.

Stir well until you get a smooth dough.

Make small balls with your hands and flatten them, or use a rolling pin to roll out the dough (you'll need extra flour). Place each cookie on a buttered baking sheet.

Bake for 10 minutes at 350°F.

Enjoy!