Light and fluffy cookie bars made from simple ingredients including one boxed cake mix, chocolate chips, AND mini m&ms! – – I’ve been sick all week.  And all I’ve wanted is comfort food.  So what’s comforting?  Chocolate!  Of course.  I mean this isn’t good for you, but it sure is delicious.  It’s really a cross between a cake and a cookie.  It’s so light and fluffy that it’s not really a cookie, but you can eat it with one hand without it crumbling, and it’s so festive with the chocolate chips and mini m&ms! Honestly, my thought while making these…