In a medium mixing bowl, whisk the Egg (4), Heavy Cream (1/4 cup), Canned Pumpkin Purée (1/4 cup), Dark Brown Sugar (2 teaspoon), Pumpkin Pie Spice (1 teaspoon) and Salt (1 pinch) together until it is a thick, gorgeous batter.
Get out an electric griddle and preheat it to 375 degrees F (190 degrees C) or use a griddle pan and heat it over medium-high heat. Grease the griddle with the Butter (1 tablespoon).
Dip each slice of Brioche (6 slice) in the custard for 5 seconds on each side, then place them immediately on the griddle. Cook them for about 2-3 minutes on each side, until they are golden brown.
While they cook, make the simple whipped cream. Pour the Heavy Cream (1/3 cup) in a bowl and use a hand mixer to whip it up until it becomes stiff. Mix in the Powdered Confectioners Sugar (1 teaspoon) and Pumpkin Pie Spice (1/4 teaspoon) until it is thoroughly combined.
Serve the cooked French toast with a generous dollop of the whipped cream on top and a drizzle of Maple Syrup (to taste). Enjoy!