Vegetarian Napoleon cake without eggs with walnuts

Softened margarine or butter to grind with flour.
Extinguish soda with lemon juice or vinegar, pour into a glass and pour milk to the top.
Add milk and soda to the dough and knead well.
Divide the dough into 6 pieces.
Put in a bowl, cover and refrigerate for 2 hours.
At this time, we will prepare the custard. First you need to pour sugar into the milk (0.5 liters) and put it on fire.
Separately stir the flour and 160 ml of milk (you can use a mixer).
When the milk with sugar boils, pour in the resulting mixture in a thin stream, stirring constantly.

Making custard without eggs.
Cook over low heat until thickened, not forgetting to stir constantly. At the end, add vanilla sugar.
When it cools down, add the softened butter and stir well.
Walnuts need to be fried and chopped a little.
Take one piece of dough out of the refrigerator and roll it out thinly.
Wrap the resulting thin layer on a rolling pin and transfer to a baking sheet.
Stretch the dough with your fingers in the shape of a baking sheet (I have it in size 35x25 cm). You can also pierce the cake in several places so that it does not rise much during baking.
Put in a preheated oven and bake at a temperature of 200 ° C for about 10 minutes, until the cake is completely baked and becomes golden.
Carefully trim the edges of the cooled cakes around the perimeter.
Put the trimmings in a bowl, we will need them for sprinkling the cake.
Spread the cake with cream and sprinkle 1/5 of the nuts.
Put the next cake on top and spread and sprinkle in the same way. Do the same with three more.
The last cake and sides just smear with cream.
Trim the cakes a little with a rolling pin or a pusher.
Sprinkle the top and sides of the cake with the resulting crumbs.
Leave the vegetarian cake in the kitchen for impregnation for a few hours or overnight, and then put in the refrigerator.