Sift flour and powdered sugar into a mixing bowl. Add eggs, milk, butter, vanilla, and salt; beat until smooth.
Heat a lightly greased 6 inch skillet. Add about 3 tablespoons batter. Tilt skillet so that batter spreads to almost cover the bottom of skillet. Cook until lightly browned; turn and brown the other side. Repeat process with remaining batter, grease skillet as needed.
Melt 1/4 cup butter in a large skillet. Stir in brown sugar, 1/4 teaspoon cinnamon and nutmeg. Stir in cream and cook until slightly thickened. Add half the bananas at a time to skillet; cook for 2 to 3 minutes, spooning sauce over them. Remove from heat.
Roll a crepe around each banana half and place on serving platter. Spoon sauce over crepes. Top with whipped cream and a pinch of cinnamon.