Make the filling: In a medium bowl, whisk collectively the egg yolks, confectioners’ sugar, cornstarch, lemon zest and juice till easy. Pressure the combination by means of a fine-mesh sieve right into a measuring cup. Retrieve the muffin pan from the fridge, and, utilizing the spout on the measuring cup or a tablespoon, add about 1 tablespoon of filling into every dough cup, filling it virtually to the highest.
