Note: This recipe has been updated here.
1/2 cup Nutella
1/2 cup heavy cream
Cook in heavy-bottomed sauce pan over MEDIUM heat*, stirring constantly until the mixture is completely smooth (~7-10 minutes). Let ganache cool slightly (~ 5 minutes). Pour over warm Nutella Bundt Cake (or any kind of cake). Let the ganache cool completely before serving.
*Do NOT use HIGH heat; if you rush this, you won't like the results.