-carrot the carrot and the potato and when they are half cooked add the broccoli and the zucchini
-separate the mushrooms with a little salt
-melt the butter then add the flour and mix well with the whisk, leave for about 5 minutes to harden
-then add a little milk and mix continuously
-after all the milk is poured and the composition becomes homogeneous, let it simmer for 5 minutes
Grease a pan with butter (I used tray 33 * 23), place the vegetables, crushed cheese with a fork I added it on top then poured the bechamel sauce and grated cheese.
Keep in the oven for about 30-40 minutes at 190 gr