Minutes & Temps
Time your meal

Red onions in the grill.35-40 minutes at 311°F

Medium onion halves. A useful starting range, with the details that matter.

°F · oz/lb°C · g/kg

Make it your portion.

One piece or reference portion, rather than total basket load.
Stay within your appliance’s supported temperatures.

Changing the size or temperature gives a modelled estimate. How it works

Typical range

Red onions, your setting

35-40minutes

at 311°F

Check at 35 min Turn around 17 min

Based on the source chart’s Onions medium halved category. This food has not been separately appliance-tested.

Source entry: Onions medium halved. Portion controls describe one piece or planning portion; they are separate from the manufacturer’s total basket load.

From preheat to the final check.

  1. 1

    Preheat

    311°F; follow your appliance instructions.

  2. 2

    Cook

    35-40 minutes; keep pieces evenly spaced.

  3. 3

    Turn

    At about 17 minutes, turn or shake.

  4. 4

    Check

    Test the center for tenderness or the stated texture.

  5. 5

    Rest

    No mandatory USDA rest time for this food.

A quick size comparison.

The source reference is marked below. Other rows are modelled estimates at your selected settings.

Red onions cooking time by reference size
Reference sizeTypical timeBasis
4 oz22-26 minutesModel estimate
8 oz35-40 minutesSource reference
16 oz54 minutes to 1 h 3 minModel estimate

Same food. Different details.

Print the grill chart

A frozen estimate is not supported for this method. Thaw safely before using the reference range.

A few things worth knowing.

How long does red onions take in the grill?

For Medium onion halves, the chart baseline is 35-40 minutes at 311°F. Adjusted sizes and temperatures are modelled estimates.

What makes red onions cook faster or slower?

Use evenly sized pieces so the center and outside finish closer together. Thickness, initial temperature and appliance output also matter. A total basket weight does not describe the thickness of each piece.

Can I cook red onions from frozen?

This method has no supported frozen model. Thaw safely first and use the reference shape.

When should I start checking?

Check at 35 minutes for this setting. Keep cooking if the center has not reached the appropriate safety endpoint or texture. A timer is a reminder to check.

How do I know when red onions is done?

Check the center for the texture you want. Start checking at the lower end of the range; your appliance and starting temperature can change the result.

Next on the menu?

More grill times
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Where this range comes from.

Reference facts are compiled from primary charts. Adjusted ranges are planning estimates. Read how we calculate them.