Bring the milk, water, butter, sugar, and salt to a boil.
Add the flour, mix the mass actively, put it on the stove and continue mixing until the dough comes together into a ball.
Transfer the dough to the bowl of a mixer, mix at low speed until it cools slightly.
After about 3 minutes, you can gradually pour in the eggs, continue to mix until the ingredients combine together.
Transfer the dough into a pastry bag and fill the donut molds, then put the semifinished products in the freezer.
For the crumbly dough gather all the ingredients together and mix.
Roll out the dough thinly between 2 sheets of parchment paper.
Sprinkle with chopped nuts, from the set of round cutters, find 2, they should match the diameter of the donuts, make 8 free spaces and put in the freezer for an hour.
Transfer the semi-finished products to a tray lined with paper, on the surface place hazelnut discs, we must wait until the dough is completely thawed.
Bake the donuts for 35 minutes, temperature 175 °C.
Then cool completely.
For the cream: Melt all the ingredients in the microwave oven for 30 seconds each, repeat this step until the chocolate is completely melted.
Put the cream in the refrigerator for at least 2 hours.
Beat for 1-2 minutes, then transfer to a pastry bag.
Assemble the cakes:
Cut the cakes horizontally.
Put cream on the bottom and add walnut paste and chopped walnuts if desired.
Then cover with cream, add a lid on top and refrigerate for at least 5-6 hours.
Enjoy!
