How to Reheat Onion Rings. As with any deep-fried food, onion rings are ideally are consumed just after they're made, but you can still reheat them to a credible state. While many restaurants recommend using a deep fryer to reheat onion rings, here is a way to do it without.
Things You'll Need
- Aluminum Foil
- Leftover Onions Rings
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Preheat oven to 350 degrees F.
Wrap leftover onion rings in aluminum foil.
Place onion rings in oven for 3-5 minutes (or until crispy).