Heat oil in a deep-fryer or large, heavy pot over high heat. Combine flour and Creole seasoning in a bowl. Dip onions in egg mixture, then toss in flour mixture. Shake in a sieve to remove excess. When oil is very hot, fry onions until crisp and golden, 2 to 3 minutes; do this in batches, if necessary. Remove onions with a slotted spoon to drain on paper towels and sprinkle evenly with salt.
Yield: 2 cups