Baked Onion Rings

Ingredients

• 2 largeyellow onions
• 946 ml (1 quart)low-fat buttermilk
• 60 g (1/2 cup)plain flour
• 1 teaspoonsmoked paprika
• 1/2 teaspoon, or to tastesalt
• 1/4 teaspoon, or to tasteblack pepper
• 2 largeeggs
• 150 g (1 1/2 cups)panko breadcrumbs

Instructions

1. 1

   Soak the onions

   Trim the ends from the onions and remove their outer layers. Cut them into 1.3 cm rings, setting aside or discarding the small inner pieces. Separate the rings in a 23 x 33 cm baking dish, pour over the buttermilk so they are covered, then cover and refrigerate for at least 2 hours.

2. 2

   Prepare the trays

   Heat the oven to 200°C (400°F). Line two large baking sheets with baking parchment, then take the onion rings from the fridge and set them aside.

3. 3

   Mix the coatings

   Combine the flour, smoked paprika, salt and pepper in a small bowl. Beat the eggs in a second bowl, and put the panko in a third, adding a little extra salt if you like.

4. 4

   Coat the rings

   Lift each onion ring from the buttermilk and coat it in the flour mixture, then the beaten egg and finally the panko. Make sure each ring is well covered; add more panko to the bowl if you run short.

5. 5

   Arrange and spray

   Set the coated rings in a single layer on the prepared baking sheets. Spray them well with non-stick cooking spray.

6. 6

   Bake until crisp

   Bake at 200°C (400°F) for about 15 minutes. Take the trays out, turn the rings over and spray the other sides, then bake for a further 15 minutes.

7. 7

   Serve warm

   Remove the onion rings from the oven and serve them warm.

What are baked onion rings?

Onion rings are a familiar American-style side dish: sliced onion is coated in crumbs and cooked until the outside is crisp and the centre is tender. This version uses the oven rather than a deep fryer.

Buttermilk softens the onions during the soak, while panko gives the coating a light, coarse crumb. Smoked paprika adds savoury warmth without making the preparation complicated.

Nutrition and macros by portion

The nutrition label shows one serving as written: 360 calories, 16g protein, 61g carbs, 6g fat.

The onions and panko provide most of the carbohydrates, while the eggs and buttermilk contribute protein and the buttermilk and cooking spray contribute most of the fat. Serve a portion alongside a salad or another vegetable to make a more balanced plate.

Why soak the onions?

Buttermilk soak: letting the separated rings sit in buttermilk for at least 2 hours helps mellow their sharpness and gives the flour a surface to cling to. Keep the dish covered in the fridge during this time.

Full coverage: arrange the rings so they are submerged as much as possible. Turn or rearrange them if needed before leaving them to soak.

Build an even coating

Coating order: move each ring from flour to egg to panko, letting excess fall away at each stage. This sequence helps the crumbs adhere instead of gathering in thick patches.

Panko supply: the amount used can vary with the size of the rings and how heavily they are coated. Keep extra to hand, as the method notes, and add it to the bowl if needed.

Get the best crunch

Single layer: leave space between the rings on the lined trays so they bake rather than steam against one another. Use both baking sheets rather than piling up the coated onions.

Turn and spray: bake for about 15 minutes, then turn each ring and spray the second side before returning the trays to the oven. The rings are ready when the crumb looks golden and crisp.

Plan the timing

Soaking time: the onions need at least 2 hours in the fridge, so begin well ahead of serving. The baking itself takes about 30 minutes, with a turn halfway through.

Serve promptly: bring the rings to the table warm after baking, when their crumb is at its crispest. They work as a side for burgers, sandwiches or a simple salad.

Season to suit

Salt and pepper: the recipe gives a starting amount for the flour mixture, with salt adjustable to taste. A little extra salt can also go into the panko, but it is optional.

Smoked paprika: mix it evenly through the flour so its flavour is distributed across the rings. Keep the panko in its own bowl to make the dipping stages easy to manage.

Recipe notes & tips

• Separate the onion slices gently so the rings stay intact.
• Set up the flour, egg and panko bowls before you start coating.
• Use one hand for the dry coatings and the other for the egg to reduce sticky fingers.
• Add panko in small amounts if the bowl runs low during coating.
• Check the rings near the end of baking, as smaller ones may crisp sooner.
• Serve straight from the oven for the crispest texture.

Variations

• Add cayenne: mix a pinch into the flour for a gentle heat.
• Use garlic powder: stir it into the flour for extra savoury flavour.
• Change the paprika: use sweet paprika in place of smoked paprika for a milder taste.
• Make them dairy-free: use an unsweetened plant-based buttermilk alternative for soaking.
• Try a dip: serve the warm rings with a simple tomato or yoghurt-based dip.

Common mistakes to avoid

• Skipping the soak: the rings miss the recipe's mellowing step; refrigerate them in buttermilk for at least 2 hours.
• Leaving the rings uncovered: some may not soak evenly; arrange them so they are covered with buttermilk.
• Using too much coating at once: thick patches can form; let excess flour and egg drip off before moving to the next bowl.
• Crowding the trays: the rings can lose crispness; spread them in a single layer across two baking sheets.
• Forgetting to turn them: one side may brown more than the other; flip and spray after the first 15 minutes.
• Skipping the second spray: the crumb may bake less evenly; spray the other side after turning.

How to store

Store cooled leftovers in an airtight container in the fridge for up to 3 days. Reheat in a 200°C oven until hot and crisp; the crumb may soften during storage.

Frequently asked questions