Make the Dough

1. Cream Butter & Sugar – In a large bowl, beat the butter and sugar until light and fluffy (about 2 minutes).
2. Add Vanilla – Mix in vanilla extract.
3. Combine Dry Ingredients – In a separate bowl, whisk together flour, cocoa powder, and salt. Gradually mix into the wet ingredients until combined.
4. Fold in Nuts (Optional) – Stir in finely chopped nuts if using.

2. Shape & Fill the Cookies

1. Scoop Dough – Roll about 1 tablespoon of dough into a ball.
2. Add Chocolate Center – Press a chocolate chunk or truffle into the center and wrap the dough around it, rolling it into a smooth ball.
3. Chill – Place the cookies on a parchment-lined baking sheet and refrigerate for 30 minutes (this helps prevent spreading).

3. Bake the Cookies

1. Preheat Oven – Preheat to 350°F (175°C).
2. Bake – Arrange cookies 2 inches apart on a baking sheet and bake for 10–12 minutes, until just set.
3. Cool Slightly – Let the cookies cool for 5 minutes before rolling in powdered sugar.

4. Coat & Serve

1. Roll in Powdered Sugar – While still warm, roll cookies in powdered sugar to coat them completely.
2. Let Cool – Once cooled, roll them a second time in powdered sugar for a beautiful snowy finish.