Preheat oven to 180°C/350°F.
To assemble the white chicken lasagna, use a rectangular oven-safe dish. A standard sized baking dish is ideal to use, at approx. 23x33cm (9x11inch).
Pour heavy cream, ¾ of bechamel sauce and fresh parsley into the pan of chicken and vegetable filling. Mix well over high heat for 1 minute. Taste and adjust for salt and pepper if required. (note 3)
Scoop a thin layer of creamy chicken and vegetable filling into the base of the baking dish. Then, lay a single layer of lasagne sheets, breaking up sheets to fill in the gaps.
Now, evenly spread ⅓ of the remaining filling followed by a second layer of lasagna sheets. Repeat.
Spread the last ⅓ of filling then evenly pour remaining bechamel sauce.
Scatter grated cheese all over the bechamel sauce.
Bake for 30 - 40 minutes on the middle shelf of the oven or until cheese blisters and turns deep golden.
Allow lasagna to rest for at least 20 minutes before cutting and serving for the perfect layers!