Sieve flour and powdered sugar into a mixing bowl. Add eggs, milk, butter, vanilla essence and salt and beat until smooth. Let it rest for fifteen minutes. Heat a non-stick pan, pour around three tablespoons of batter on it and rotate the pan so that the batter spreads evenly all over the surface.
Cook until lightly browned, flip and cook the other side. Repeat the process with the remaining batter. To make the sauce, melt butter in a pan. Stir in brown sugar, cinnamon powder, nutmeg powder and fresh cream and cook until slightly thickened.
Add the bananas and cook for two to three minutes. Place a banana over each crepe and roll. Spoon remaining sauce over the rolls, sprinkle some cinnamon powder and serve.