Prepare Dough: Combine butter and icing sugar in a mixing bowl. Mix until well combined.
Add Egg: Add the egg and mix until smooth.
Add Flavorings and Dry Ingredients: Mix in vanilla essence, cornstarch, cocoa powder, and milk powder. Stir until well combined. Gradually add the all-purpose flour and baking powder. Knead until a dough forms.
Shape the Dough: Shape the dough into small balls. Dip them in milk. Use a fork to flatten them slightly and sprinkle chopped almonds on top.
Make Indentation: Use the back of a fork or your thumb to create an indentation in the center of each cookie for the Nutella spread later.
Bake: Preheat your oven to 180°C (350°F). Place the shaped cookies on a baking sheet lined with parchment paper. Bake for 10 to 20 minutes until they are lightly golden brown.
Add Nutella: Remove the cookies from the oven and place a dollop of Nutella in the indentation of each cookie.
Bake Again: Return the cookies to the oven for an additional 5 minutes.
Cool and Store: Once baked, let the cookies cool completely before transferring them to a container for storage. Enjoy these delicious Nutella Button Cookies as a delightful treat with your favorite beverage!