Inspired by In Bloom Bakery, these Chocolate Thumbprint Cookies feature a rich, brownie-like base and a smooth ganache center — perfect for holidays and gifting.
½ cup unsalted butter, softened
¼ cup granulated sugar
¼ cup brown sugar
1 egg yolk
1 tsp vanilla extract
¾ cup all-purpose flour
¼ cup Dutch-process cocoa powder
1 tbsp cornstarch
¼ tsp salt
Ganache Filling:
½ cup chocolate chips (semi-sweet or dark)
¼ cup heavy cream
Beat butter and sugars until fluffy (2–3 min).
Mix in egg yolk and vanilla.
Sift in flour, cocoa, cornstarch, and salt. Mix until combined.
Chill dough for 30–45 minutes.
Preheat oven to 350°F. Line baking sheet with parchment.
Roll dough into 1-inch balls and place on tray.
Press centers with thumb or spoon.
Bake 8–10 min. Re-press centers if needed. Cool completely.
For ganache: melt chocolate chips and cream together, stirring until smooth.
Fill cookie centers with ganache. Garnish as desired.
Chill before baking for best shape. Use high-quality chocolate for ganache. Freeze unfilled cookies for up to 2 months.