Divide dough in 4. Take one piece, coat lightly on all sides with flour and pat into a rectangle. Roll into a large rectangle, as thin as possible, on a floured board. Bake on a lightly greased cookie sheet at 350 for about 35 minutes, until golden brown. Freezes well, but underbake slightly.
Unbaked knishes freeze well.
Bake frozen knishes at 350 for about 45 minutes.