Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Mix together the cake mix, vegetable oil, eggs, and vanilla extract in a large bowl until well combined. The dough will be thick and slightly sticky.

Roll the dough into tablespoon-sized balls. If desired, roll each ball in powdered sugar for a sweet, crinkly exterior.

Place the balls onto the prepared baking sheet, spacing them about 2 inches apart.

Bake in the preheated oven for 8-10 minutes, or until the edges are set and the tops are slightly cracked. Be careful not to overbake—they should still be soft when you take them out!

Cool the cookies on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.