Hazelnut & Chocolate Hazelnut Cake

🧾 Ingredients

For the cake:

• 1 cup (120 g) ground hazelnuts
• 3/4 cup (90 g) all-purpose flour
• 1 tsp baking powder
• 1/4 tsp salt
• 4 eggs
• 3/4 cup (150 g) sugar
• 1/2 cup (120 ml) vegetable oil or melted butter
• 1/2 cup (120 ml) milk
• 1 tsp vanilla extract

For the chocolate hazelnut filling/frosting:

• 200 g (7 oz) chocolate hazelnut spread (like Nutella)
• 100 g (3.5 oz) butter (softened)
• 1/2 cup (60 g) powdered sugar
• 100 g (3.5 oz) melted dark chocolate

Optional topping:

• Chopped roasted hazelnuts 🌰
• Chocolate shavings 🍫