Ingredients
Method
- Line two baking sheets with parchment paper.
- In a bowl, whisk flour, cocoa powder, salt, and baking powder.
- Cream butter, brown sugar, and granulated sugar for 2 minutes until fluffy.
- Add egg yolks and vanilla; mix until pale and smooth.
- Gently mix in dry ingredients until just combined.
- Scoop dough into tablespoon-sized balls and roll smooth.
- Place on baking sheets and press a thumbprint indent into each.
- Chill dough for at least 1 hour.
- Preheat oven to 350°F (175°C).
- Bake cookies for 9–11 minutes.
- Re-press indents while cookies are warm and cool completely.
- Heat cream until steaming and pour over chocolate chips.
- Let sit 1 minute, then stir until smooth ganache forms.
- Fill cookie centers with ganache and top with sprinkles if desired.
- Chill 10–15 minutes to set ganache before serving.
Notes
For best results, do not overmix dough and always chill before baking to prevent spreading. Ganache can be flavored with sea salt, peppermint, or espresso powder.
