First cook the ribbon noodles in 1/2 liter of salted water until cooked.
Fry the minced meat in a slightly deeper pan. Add the can of tomatoes and season with salt, pepper and mustard.
Now sweat the 20 g margarine and flour in a small saucepan and deglaze with the milk (roux). Then add the cream cheese and the parmesan. Mix everything well. If it gets too thick, add a little more milk - it has to be nice and viscous. Season to taste with salt, pepper, nutmeg and fondor.
Now layer in a greased baking dish as follows: half of the pasta, minced meat sauce, cheese sauce and the remaining pasta. Put the Gouda in slices on top.
Now put in the preheated oven for 15-20 minutes at 200 ° C.
Tip: Only distribute small portions on the plate at first, the lasagna is very powerful.