Step 1: In a large bowl, whisk together eggs, pumpkin puree, milk, 1/4 cup heavy cream, brown sugar, vanilla, cinnamon, nutmeg, ginger, and salt until smooth.
Step 2: Heat a large skillet or griddle over medium heat and melt 1 tbsp butter.
Step 3: Dip each slice of bread into the pumpkin mixture, coating both sides evenly, and let excess drip off.
Step 4: Cook bread slices for 3-4 minutes per side, until golden brown and cooked through, adding more butter as needed.
Step 5: While French toast cooks, whip 1/2 cup heavy cream with maple syrup until soft peaks form.
Step 6: Serve French toast warm, topped with maple whipped cream and a dusting of powdered sugar.