In a large bowl, mix together cake mix, butter and egg. Mix until a thick cookie batter forms.
In a separate small bowl, combine sugar and cinnamon.
Roll the cookie dough into one inch spheres and coat each one in the sugar and cinnamon mixture by rolling it.
Place each cookie sphere gently onto a non-stick baking sheet. Bake for 10 to 12 minutes and allow to cool on a cooling rack.
Notes
Add Coconut: Toasted coconut is a great surprise for these cookies.
Crunch: Crushed pecans or walnuts add a nice crunch to the snickerdoodles.
Crisp: For a crispy cookie, make the cookies thinner and cook time should be a little longer. For a chewy snickerdoodle recipe, make them a thick cookie and cook just until done but still soft to produce a chewy texture.
Alternate ingredient: Add chocolate to the cookie dough balls, try white chocolate, dark chocolate or milk chocolate chips.
Different cooking method tip: Make cookies in the air fryer. Bake at 325 for about 10 minutes.