The transitive verb introduce is normally followed by to when you want to mean  �presenting someone to another person �. Therefore,  He introduced me his friend  is incorrect. It should be  He introduced me to his friend.
 
We prepared our friends dinner  would sound correct when spoken, but in its written form, you need an apostrophe. The correct form, hence, is We prepared our friend �s dinner  if you �re referring to one person, but  We prepared our friends � dinner  if you mean more than one friend (note the placement of the apostrophe). 
 
She made us some breakfast  is correct. 
Have a great day or night, whichever applies! :)