In a medium bowl, cream together the margarine (or shortening) brown sugar if using and honey until combined. Add milk & vanilla & mix to combine. Stir in the sifted ingredients & mix to combine. Cover dough and refrigerate overnight. (or toss in freezer for an hour)
NOTE: These graham crackers are very lightly sweet. If you like them sweeter you can add sweetness by sprinkling additional cinnamon/sugar onto tops of crackers before baking.