How to cut peanut brittle I would like to be able to cut peanut brittle into neat squares. Everything I have tried does not result in a 'neat, straight cut', a quick Google search shows some very expensive 'industrial' machinery...but nothing for the 'home'.

Any good techniques for how to cut peanut brittle would be appreciated. I would also like a technique that would work after chocolate has been melted on top, although I could add the chocolate after the squares are cut.
Try using a finely serrated knife (I'm thinking like a dollar store steak knife). Move the knife back and forth many times, but apply little to no downward pressure that could cause the peanut brittle to fracture.