*You can buy bags of chopped Andes Mints on the baking aisle of your grocery store. They're typically located near the chocolate chips. [br]**The longer you leave the unbaked cookie dough in the fridge (i.e. the colder the dough), the more dense and thicker your cookies will be. If you want thicker/chunkier cookies rather than ones that are flatter, keep the dough in the fridge for a few hours (or perhaps the freezer for 30 minutes to an hour) before rolling into cookie dough balls and baking.