Coat four 3/4-CUp
(180ml) soufflé dishes with cooking oil spray,
sprinkle bases and sides with sugar, shake off
excess. Place on oven tray. Heat butter in medium
pan, stir in flour; cook, stirring, until mixture
thickens and bubbles.
Gradually stir in
combined milk, rind, juice and extra sugar, stir
until mixture boils and thickens. Pour mixture into
medium bowl, stir in egg yolks.
Beat egg whites
in small bowl with electric mixer until soft peaks
form; fold gently into orange mixture in 2 batches.
Spoon into prepared dishes; level tops.
Bake in
moderately hot oven about 20 minutes or until
soufflés are puffed. Serve immediately; dusted with
a little sifted icing sugar if desired.