There are two important elements to the success of your lasagne. Firstly, the sauces must be thick; there is no dry pasta to soak up excess liquid. Secondly, the leeks must be soft; if they are too firm you will have a little difficulty in cutting the lasagne.
You can use potato starch in place of corn starch for this recipe. If gluten-free is important to you remember to check the packet to see whether traces of gluten may be present or use a certified gluten-free brand. Pure corn starch is gluten-free but If the product is made in a facility that also processes wheat flour there is always the possibility of some cross-contamination.
You can make this in individual portion-sized dishes too if you prefer. And you can also replace the meat sauce with a vegetarian version such as
this one.Most hard or semi-hard cheeses will work for the sauce. You can even use highly-flavoured cheeses such as Stilton or Gorgonzola but you will need to reduce the amount you add to avoid overpowering the lasagne. This lasagne freezes very well.