In a medium bowl, whisk eggs, milk, pumpkin spice, vanilla extract, and salt until combined.
In a small bowl, mix pumpkin puree and coconut sugar until combined, then spread a thin layer of pumpkin puree on each slice of bread.
Sandwich 2 slices of bread together and soak in the egg batter on both sides. In a large cast iron skillet over medium heat, melt 1 tbsp of butter and cook the French toast on each side until golden brown, for about 2-3 mins. Repeat the process, garnish with powdered sugar and maple syrup.
Enjoy immediately. It's hella good!