Homemade-Nutella Tart » Sweet Cannela

Ingredients

• 114 gr (4 oz) butter, at room temperature and cut in 8 pieces
• 50 gr (1.8 oz) sugar
• ½ teaspoon salt
• 140 gr (4.9 oz) flour
• 1 egg yolk
• 140 gr (4.9 oz) whole hazelnuts
• 480 gr (16.9 oz)heavy cream
• 454 gr (16 oz) milk chocolate, chopped
• 56 gr (2 oz) semisweet chocolate, chopped
• ½ teaspoon vanilla extract