stuffed graham cracker cookies

Does anyone else remember these from their childhood?  My grandmother used to make these every time she had leftover icing from sugar cookies or from frosting an angel food cake.  Either I had never thought to make them for my kids or I did think of it but didn't actually do it but I should have- my kids thought they were scrumptious.  And they're so easy!!

stuffed graham cracker cookies (Grandma Betty)
leftover icing
graham crackers

Break the graham crackers into pieces.  "Sandwich" the icing between two graham crackers.

What I have to say- My grandmother always used to make squares, not rectangles. ; )