Place nuts in a food processor and pulse until finely ground.
Add raisins and pulse until it makes a sticky paste.
Add rice cakes and pulse until mixture is fine and fluffy.
Add cinnamon, vanilla, orange juice and pulse until sticky.
In a 8 x 8 inch glass baking pan, spread bar mixture evenly across pan. Cover with plastic wrap and press into the bottom of the pan to evenly distribute.
Remove wrap and cut into 12 bars.
If you prefer a crisp bar, place bars on a baking sheet and place in a 250 degree oven for approximately 30 minutes.