Onion Rings Recipe

Prepare and slice

Peel the sweet colossal onions. Cut off the stem and root ends so the onion sits flat. Slice each onion crosswise into 1/2- to 3/4-inch thick rings. Gently separate the slices into individual rings, keeping the largest intact. If small inner rings are too tiny, save them for another use or fry them together as a cluster.

Place the separated rings in a single layer on a paper towel-lined tray. Pat them dry to remove surface moisture; excess water will make the batter slide off and cause oil splatter.

Mix dry ingredients

In a medium bowl, whisk together 1.5 cups all-purpose flour, 1/4 cup cornstarch, 1 tsp baking powder, 1 tsp salt, 1 tsp sugar, 1/2 tsp freshly ground black pepper, and 1/2 tsp paprika until uniform.

Combine wet and dry

In a separate small bowl, beat 1 large egg lightly. Add 1 cup of cold sparkling water or cold beer to the egg and stir to combine. Pour the wet mixture into the dry ingredients and whisk just until combined; a few small lumps are fine. The batter should be thick enough to coat the back of a spoon but still pourable. If it's too thick, add up to 2 tablespoons more cold water or beer. Keep the batter cold (place the bowl over an ice bath or refrigerate briefly) until ready to fry — cold batter yields a lighter, crispier crust.

Combine 1/2 cup all-purpose flour, 1/2 cup breadcrumbs or panko (if using), 1/4 tsp salt, and 1/4 tsp black pepper in a shallow dish. This dry dredge helps the batter adhere to the onion rings and adds extra crunch if using breadcrumbs.

Set up an assembly line: one tray for dried onion rings, the shallow dish with dredge, the bowl of batter, and a plate or wire rack for holding battered rings prior to frying.

Heat oil

Pour about 1 to 1.5 cups of neutral oil into a heavy-bottomed pot or deep skillet (enough to give rings room to float but not more than half-full). Heat the oil over medium-high heat until it reaches 350-375°F (175-190°C). If you don't have a thermometer, test with a small drop of batter — it should sizzle and rise to the surface within a couple of seconds and begin to brown slowly.

Dredge and batter

Working in small batches (3–5 rings depending on pan size), dredge an onion ring in the flour/breadcrumb mixture, shaking off excess. Dip the ring into the batter, coating completely, letting excess batter drip back into the bowl. For an extra-thick crust, double-dip: after battering once, return briefly to the dredge, then batter again (this will yield a heavier coating; adjust cooking time slightly). Place battered rings on a plate or wire rack while heating remaining rings.

Fry until golden

Carefully lower a few battered rings into the hot oil using tongs or a slotted spoon. Do not overcrowd; maintain oil temperature around 350°F. Fry 2–3 minutes per side (total 3–5 minutes) or until the coating is golden brown and crisp and the onion inside is translucent and tender. Adjust time for thicker rings. Turn rings once if they brown unevenly.

Drain

Remove rings with a slotted spoon or spider and transfer to a paper towel-lined baking sheet or wire rack set over a sheet pan to drain excess oil. While still warm, lightly sprinkle with fine sea salt or flaky salt to taste.

Allow the rings to rest 1–2 minutes on the rack so the coating firms up. Serve hot with your choice of dipping sauces (ranch, spicy mayo, ketchup) and extra salt on the side.

If making ahead: keep warm in a 200°F (95°C) oven on a wire rack set over a sheet pan for up to 20–30 minutes. For best texture, serve immediately.