Nutella-Hazelnut Cookies

INGREDIENTS

• 3 cups all-purpose flour
• 2 teaspoons baking powder
• ½ teaspoon salt
• 1¼ cups Nutella
• 4 tablespoons unsalted butter, at room temperature
• 1-1/3 cups granulated sugar
• 2 eggs, at room temperature
• 1 teaspoon vanilla extract
• 1 teaspoon instant espresso powder
• 1/3 cup milk
• 2 cups hazelnuts, toasted and finely chopped
• 1 cup powdered sugar