Nutella Snowflake Cookies Part of 50 Christmas Cookies

Ingredients

• 1 cup (2 sticks) unsalted butter, softened (227g)
• 1/2 cup granulated sugar (100g)
• 1/4 cup packed light brown sugar (50g)
• 1 large egg
• 1 teaspoon vanilla extract
• 2 1/2 cups all-purpose flour (300g)
• 1/2 teaspoon baking powder
• 1/4 teaspoon salt
• 1/2 cup Nutella, room temperature (150g)
• 1 tablespoon milk
• Flaky sea salt, for sprinkling