Preheat the oven to 350 degrees Fahrenheit and line two baking sheets with parchment paper. Set aside.
In a large bowl, combine 1 (15.25 ounce) box lemon cake mix, 1 teaspoon baking powder, ⅓ cup vegetable oil, 1 tablespoon lemon zest, and 2 large eggs until a thick batter forms.
Use a cookie scoop to scoop the dough onto the baking sheets, leaving at least 2 inches between cookies.
Bake for 8-10 minutes, until the edges are set. If using a large cookie scoop, the cookies may need 12-14 minutes for the edges to set. Remove to a cooling rack and cool completely. Dust with powdered sugar if desired.
Notes
Storing Instructions
At Room Temp: Store in an airtight container at room temperature for up to 5 days.
In the Freezer: Freeze completely cooled cookies in a freezer-safe, sealed plastic bag for up to 1 month. When you are ready to eat them, thaw the cookies on the counter and bring them to room temperature.