Pioneer Woman's Grilled Corn Guacamole

I fell in love with this guacamole last summer.  The grilled corn really adds something special to it.  Beware: You will want to eat the whole batch yourself.  I think this could easily be halved if you don't want to buy six avocados, but I haven't done it because I love guacamole too much to make a smaller batch.  Must try!  Here it is.  I serve it with my favorite taco recipe (see above).