Mix soft cheese, cream, cheeses, eggs, nutmeg and a grind of black pepper in a large bowl
Melt butter in a large frying pan and fry onions for 5-7 minutes until softened and lightly golden, adding garlic, cabbage, carrots and chopped sage halfway through
Season well
Grease a 2 litre (3½ pints) baking dish measuring 26 x 20cm (10 x 7.5in)
Spoon a third of the vegetable mixture into the dish
Top with 2 lasagne sheets then a third of the creamy sauce
Repeat the layering, finishing with the sauce
Scatter over Parmesan and top with reserved sage leaves