Bake for 45-55 minutes. Look at your oven, you may have to lower the temperature. It may take longer. Readiness can be checked with a toothpick.
Allow the cake to cool completely. I spent the night on the balcony. I wish I’d put it in the fridge. The temperature was below zero at night, and I didn’t take this into account. The ganache poured on the pie was too cold and it froze with lumps. There was no smooth surface here.
Ganache: put the chocolate, butter and corn syrup (I didn’t have it, replaced it with maple) in a bowl placed over a pan of boiling water. Melt and mix until smooth. Remove from the heat and pour the ganache over the filling. Put it in the refrigerator so that the chocolate freezes.