Preheat oven to 375ºF.

Mix together dry cake mix, oil and eggs until smooth. Drop by tablespoon onto ungreased cookie sheet. (I like to roll mine into a ball to make the sizes more even). If not using M&M's, bake for 8-10 minutes.

If using M&M candies, bake for 6 minutes, pull from oven and press candies into the tops of each cookie. Place back in oven for 2-4 minutes.

Let cool for a couple minutes on baking sheet and carefully take off using a spatula. Enjoy!