Next, we’ll make our decadent dark chocolate ganache. Pour 1 bag of chocolate chips into a heat-proof bowl, then bring 1 cup of heavy whipping cream to a simmer on the stove. (Sorry for the lack of step-by-step pictures here.) Pour the cream over the chocolate and let sit for 5 minutes, then whisk until smooth and fully combined. Remove the pie from the freezer and pour the chocolate ganache over the caramel layer.