Mix 300g of flour with baking powder, baking soda and salt.

Mix well 150g of soft butter with sugar and vanilla. Then add eggs, one at a time, mix well after each and add the next only after the previous one has been well incorporated.

After you have incorporated the eggs, add 1/3 of the cream, mix.

Then add 1/3 of the flour composition from step 1. Mix until incorporated.

In this way, add the rest of the cream and flour in 2 more rounds. After incorporating the last batch of flour, do not mix much with the mixer, stop and prepare the filling.

Mix 40 g of flour, brown sugar and cinnamon.

Add 50g of soft butter and mix well (perfect with your hands).

Then add the walnuts, I chopped them a bit, it would be better to cut them with a knife, to make the pieces bigger.

Mix well, this will be the filling for the cake.

Spread the baking tray with baking paper, grease the walls of the tray with butter. For this amount of ingredients you will need a large, deep rectangular tray. If you want to make less, put the ingredients in half and use a smaller tray.

Pour half of the dough into the pan, spread it evenly with a spoon. Then sprinkle half of the filling over the entire surface.

Then pour the other half of the dough and sprinkle the rest of the filling. Place the tray in the oven at 180-200 degrees.

When it browns and grows, test it with a toothpick, take it out of the oven and let it cool.

Then portion it and serve it hot or cold.

Good appetite!