In my Dig for Victory guide it suggests double digging, placing the turf upside down in the bottom of the trench, for breaking in new ground. I've not tried that myself but have stacked the turf as described above.
This year I covered a large patch of pasture, about 6 metres by 10 with brown cardboard followed by part rotted compost, green waste and grass clippings. This was covered in heavy duty landscape fabric. To avoid wasting the space, I dug planting holes (roughly a foot cube) and filled those with finished compost. Planted squash and they did quite well.