Tart linz

Today we will prepare a cake of Linz. This cake comes from Austria and its name is taken from the town of the same name.
Recipe

QUANTITY PRODUCED: 4-6 Servings
PREPARATION TIME: 40 mins COOKING TIME: 50 mins TOTAL TIME: 2 hrs 30 mins
It is considered one of the oldest in the world, no one knows exactly who gave the name to this cake or who was its creator. It is a delicious cake with a mass very aromatic and delicious jam.
INGREDIENTS
200 grams of flour
150 grams of sugar
1 tablespoon vanilla sugar
100 grams of ground hazelnuts
1 teaspoon ground cinnamon
1 teaspoon lemon zest
1 pinch of clove crushed
200 grams of butter
1 egg
250 grams of gooseberry jam
1 teaspoon baking powder

1 egg yolk