on a deep large pan , add 2 stick of butter , add the chopped onion and stir till its translucent and add 1 cube of knorr chicken stock

when done add the ground beef and stir till its medium well then add the zucchini and stir for 5 minutes then cover it on a low heat

preheat oven 190 C

at the same time when zucchini is covered , mix the the milk and knorr bechamel mix and 1 cube of knorr chicken stock in the mixer , then add it in another deep pan and stir for 2 minutes

add half stick of butter and keep stir and add another 1 cube of chicken stock , add pepper and salt to taste if u want , but knorr stock cubes have a lot of salt in it and my opinion is no need to salt

when u feel that the sauce is getting thick turn off the heat . in a baking pan add layer of sauce in bottom then add the zucchini and meat then add the rest of bechamel sauce

bake in oven for 40 minutes , and bon appetit ;)

if u have a bechamel sauce not mix , cook in a same way but no need to milk or the mixer , maybe u can add 1 cup of milk to the sauce