Chip Putt or Tiger Chip?
For the Chip Putt place your clubhead on the toe with an almost vertical angle of the shaft. Than make an easy pendelum stroke as an putt.
The advantage here is that with this stroke there is almost no resistance to the clubhead from the deep gras.
Or you try to play the shot as Tiger Woods has done it on his peak and you are using a fairway wood number 3 or 5 and make a pendelum stroke as you would do with your putter.
This shot is highly recommended if the ball is sitting up on hard gras.
The wide sole of your wood is sliding a lot better over the gras than the sole of an iron.