Preheat the oven

• Preheat the oven to 175 °C (350 °F).

Mix the batter

• Combine the cake mix, whipped topping and vanilla in a bowl.
• Stir until fully combined; the batter should be thick.

Coat in powdered sugar

• Scoop portions of dough with a cookie scoop or spoon and drop them into the powdered sugar.
• Roll each ball to coat completely.

Arrange on the tray

• Place the coated cookies on a parchment-lined baking tray, spaced apart.

Bake

• Bake for 11 to 15 minutes, adding a couple of minutes for larger cookies.

Cool and store

• Let the cookies cool on the baking tray before removing.
• Store in an airtight container.