Nutella Crinkle Cookies

Bahan-bahan (32 porsi)

• 2 and 1/2 cups (313g) all-purpose flour (spooned & leveled)
• 2 Tablespoons (10g) unsweetened natural cocoa powder
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 3/4 cup (12 Tbsp; 170g) unsalted butter, softened to room temperature
• 3/4 cup (150g) packed light or dark brown sugar
• 1/3 cup (67g) granulated sugar
• 1 large egg + 1 egg yolk, at room temperature
• 1 teaspoon pure vanilla extract
• 3/4 cup (225g) Nutella
• 3/4 cup (94g) chopped hazelnuts
• 1/3 cup (100g) Nutella
• 1/3 cup (67g) granulated sugar
• 3/4 cup (90g) confectioners’ sugar, plus more as needed to sift on top