Ingredients: For the Thumbprint Cookies: 2/3 cup (165g) unsalted butter, softened 2/3 cup (140g) caster sugar 1 1/2 teaspoons vanilla extract 2 egg yolks 2/3 cup (133g) dark chocolate, melted 1 1/4 cups (187g) all-purpose flour, sifted 1/3 cup (30g) cocoa powder, sifted 1/4 teaspo…
