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How to Grill Portobello Burger

How to grill portobello burger on the BBQ. Cook at 200-220°C (400-425°F) for 4-5 minutes per side. Step-by-step guide with temperatures and tips for perfect results.

By Bill Ohaire | Published: April 2026 | Last Updated: April 2026

Perfectly seared beef steak on a hot BBQ grill

Photo by Mohamed Olwy on Pexels

Quick Answer

Grill portobello burger at 200-220°C (400-425°F) for 4-5 minutes per side.

How to Grill Portobello Burger

Portobello mushrooms are the original plant-based burger. Remove the gills (they hold excess moisture and turn dark). The cap's natural concave shape is perfect for holding toppings. Serve on a brioche bun with all the traditional burger fixings.

Temperature

200-220°C (400-425°F)

Cook Time

4-5 minutes per side

Category

Plant-Based BBQ

Step-by-Step Instructions

  1. Prep: Remove stems, scrape out gills with a spoon. Brush with olive oil, balsamic, and garlic. Season with salt and pepper.
  2. Preheat: Get your BBQ to 200-220°C (400-425°F). Clean and oil the grate to prevent sticking.
  3. Grill: Cook for 4-5 minutes per side.
  4. Check doneness: Tender throughout, slightly shrunken, juices released, visible grill marks.
  5. Serve: Serve immediately for the best texture and flavour.

Tips for Perfect Results

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Frequently Asked Questions

How long do you grill portobello burger?

Grill portobello burger at 200-220°C (400-425°F) for 4-5 minutes per side. Tender throughout, slightly shrunken, juices released, visible grill marks.

What temperature for grilled portobello burger?

Grill portobello burger at 200-220°C (400-425°F). Preheat the grill and oil the grate before cooking.

Related BBQ Guides

All Cooking Times BBQ Vegetables Guide

Sources & References

1
Food Standards Australia New Zealand
Official Australian food safety guidelines and safe cooking temperatures.
Government
2
America's Test Kitchen (YouTube)
Rigorously tested steak cooking methods with scientific precision.
Video
3
Guga Foods (YouTube)
Premium beef experiments — dry ageing, wagyu, and creative steak techniques.
Video
4
Serious Eats
Kenji Lopez-Alt's food science approach to grilling the perfect steak.
Reference