Every gal should know how to cook a steak really well. A good chicken soup for when he's sick. And I've found that some guys have a strange nostalgia for hot dogs in mac and cheese? Go figure.
I'm a terrible (but trying!) cook, so my poor boyfriend doesn't have a whole lot to choose from! HOWEVER- we found something he loves and I can handle- oatmeal chocolate chip cookies! The recipe is on the top of the Quaker oats container... but they call for raisins and that's where I put the chocolate chips. They have gotten me out of the dog house on occasion! :)