Currently, there is no pie emoji available to pie loving emoji users worldwide.  There is a flan emoji and we don't know anyone currently having conversations about flan...do you?  We are tired of using the cake emoji to discuss the greatest dessert ever...pie.  

So, Unicode Consortium, simply make us a pie emoji and include it in the next update.  You win.  We win.  Pie wins.  World Pie Domination.