01 - Separate the thinly sliced onions into individual rings and place them in a large mixing bowl.
02 - Combine the all-purpose flour, cornstarch, salt, black pepper, and paprika in a separate bowl, stirring until evenly blended.
03 - Toss the onion rings in the flour mixture, ensuring each ring is thoroughly coated. Shake off any surplus flour.
04 - Heat the vegetable oil in a deep pan or skillet over medium-high heat until it reaches 350°F (175°C).
05 - Fry the coated onion rings in batches for 2 to 3 minutes or until golden brown and crispy. Avoid overcrowding the pan to maintain oil temperature.
06 - Remove the fried onion crisps using a slotted spoon and drain them on paper towels to absorb excess oil.
07 - Serve immediately for optimal crispiness, or allow to cool for extra crunch. Store cooled crisps in an airtight container for up to two days.