Return to heat; stir vigorously over medium heat until mixture forms a ball and a thin, dry film forms on bottom and sides of pan, about 1 minute. (epicurious.com)
Line the bottom of two 9 - inch cake pans with parchment paper then grease bottom and sides with coconut oil. (healthylivinghowto.com)
Continue to cook, stirring vigorously, until a dry film forms on bottom and sides of pan and dough is no longer sticky, about 2 minutes longer. (epicurious.com)