Onion BBQ Cook Time
180°C (350°F) Medium Heat
15–20 min (halved) • Internal: N/A — cook until soft and caramelised
How to BBQ Onion
1
Cut onions in half (leave root end intact to hold them together) or into thick rings.
2
Brush with olive oil. Season with salt and pepper.
3
Preheat BBQ to medium — 180°C (350°F).
4
Place cut-side down. Cook 15–20 minutes for halves, 5–8 minutes per side for rings.
5
Done when soft, caramelised, and slightly charred.
Pro Tips
- Leave the root end on halved onions — it holds the layers together.
- For BBQ onion rings, use toothpicks or skewers through thick rings to prevent them falling apart.
- Red onions caramelise beautifully and add colour to the plate.
- The classic Aussie BBQ onion: thick rings caramelised in a pan on the hotplate alongside snags.
Resting Time
Rest for 3–5 minutes after removing from the BBQ. This allows juices to redistribute for a juicier result.
External Resources
- Food Standards Australia New Zealand — Official safe cooking temperature guidelines
- Safe Food Queensland — Queensland Government food safety resources
- Meat & Livestock Australia — Australian meat cooking guides and cut information
- Best Recipes Australia — Australian BBQ recipes and meal ideas
Frequently Asked Questions
How long to BBQ onions?
Halved: 15–20 minutes cut-side down. Rings: 5–8 minutes per side. Both over medium heat.
What type of onion is best for BBQ?
Brown onions for classic BBQ flavour, red onions for colour and sweetness, sweet onions for caramelisation.
How do you stop onion rings falling apart on the BBQ?
Use thick slices (1.5cm+), skewer with toothpicks, or use a grill basket.