Make your favorite lasagna using fried aubergine and/or zucchini slices as ‘pasta’! It works a treat.
Instead of bechamel or white sauce, use a mixture of sour cream and beaten egg. If you want a fairly stiff layer of ‘white sauce’, use more beaten eggs. If I use a simple tomato sauce, I make the white layer with more egg so that it stands out and provides more protein. If I am using a more substantial pasta sauce (like Bolognese), I use less egg. Sometimes I use sour cream on its own if I am not bothered about a layer of white.
This is a simple way to turn a favorite high carb meal into a favorite low carb meal.