Slightly over baked cookies can sometimes be rescued from being too dry and crunchy by placing them in an airtight tub before they are fully cooled.  Placing hot, fresh-from-the-oven cookies on a wire rack to cool allows cool air to circulate around them finishing the baking (drying) process.  Putting them in a tub will not allow the moisture to go anywhere other than back into the cookies.  If you use this trick you may notice a slightly shorter shelf life than usual.

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