In the meantime, cut the toast into cubes and toast in hot clarified butter until golden brown. Season with cinnamon and salt. Drain the croutons on paper towels.
Finely puree the pumpkin soup with a hand blender. Pass through a sieve into another saucepan and season well with salt and pepper. Put the orange fillets in the hot soup and let them steep for a moment. Before serving, fold in the whipped cream.