Yep you can freeze raw veg,however i read not too long ago that it is not advisable as freezing may kill some of the nutrients,i cant bloody remember where i read it

Having said this,i freeze my dogs veg regularly,i make up a weeks worth,then spoon it into icecube trays,so when feeding time rolls around all i have to do is pop a cube out and let defrost :)
I'll find where i read this and let you know :)