Grind walnuts to make powder. Put dry yeast and 1tbsp of sugar into the warm milk, wait around 10m until bubbly.
2
Place flour in a bigger bowl, add rest of sugar, egg and soften butter and mix it well with hands. Add yeast and knead until compact. (Add more flour if dough is too sticky) Dough should be soft.
3
Cover the dough with plastic wrap and leave in the fridge for 30-60min. After that, Take the dough out of the fridge and separate in 4( you can scale to measure)
4
Filling: Mix walnuts powder, sugar and jam (filling should be soft, easy to spread).
5
Place the baking sheet onto the baking tray. Using rolling pin ( put some flour) spread one dough on the size of your oven dish and put it in the dish. Spread 1/3 of the filling.
6
Repeat the process with remaining three dough, spreading two filling in between. Close the sides so the jam doesn’t come out. Make holes on the top with a fork. Let it rest for 60min.
7
Preheat the oven to 170C and bake for 30min. Take it out, turn it upside-down and leave it to cool down.
8
Glaze: Using double boiling system, melt the chocolate together with milk, oil and sugar and then pour over warm or cooled down cake.
9
Leave it in fridge for at least 30min, better overnight. Cut it in squares and serve.