Prepare the Custard. In a large mixing bowl, whisk together the eggs, milk, pumpkin puree, vanilla extract, pumpkin pie spice, and brown sugar until well combined.
Soak the Bread. Dip each slice of bread into the pumpkin custard, ensuring both sides are thoroughly coated. Let the bread soak for a minute to absorb the flavors.
Cook the French Toast. Heat a large skillet or griddle over medium heat and add a tablespoon of butter. Once melted, place the soaked bread slices in the pan. Cook for 3-4 minutes on each side, or until golden brown and cooked through.
Serve and Enjoy. Serve the Pumpkin French Toast warm, topped with your favorite toppings like maple syrup, whipped cream, pecans, or a dusting of powdered sugar.