Preheat oven to 350°F. In a large bowl, beat the eggs and oil until blended; gradually add the cake mix and mix well. Fold in the chips and toffee bits. Editor's Tip: We recommend mixing up the ingredients by hand. This reduces the risk of over mixing, ensuring your cookies don't get too tough.
Drop by tablespoonfuls onto greased baking sheets. Bake until golden brown, 10 to 12 minutes. Once they're out of the oven, let the cookies cool for a minute before moving to wire racks. Editor's Tip: Make sure to space cookies evenly on the baking sheet—usually about 2 inches—and consider using a piece of parchment paper so no dough sticks to the pan.
