Think of this cake as an easier version of pumpkin pie—baked in a 9x13-inch baking dish instead of a pie crust. In fact, we modified our classic pumpkin pie recipe to create the base of the cake, adding plenty of chopped semi-sweet chocolate so every bite is a creamy combination of custardy pumpkin and melted chocolate. Sweetening the deal, the cakey topping tastes intensely like a molten chocolate cake. You have our full permission to enjoy this dream team (pumpkin and chocolate, that is) all year long, not just around the holidays. It’s so simple you can.