Cornish Game Hens
at 400°F
The answer
40 min – 50 minat 400°F
Cornish Game Hens take about 40 min – 50 min in a 400°F oven. Done is 165°F on a food thermometer, plus a 10-minute rest — never the clock alone.
SOURCE·USDA FSIS safe minimum internal temperatures·400°F planning range derived·REVIEWED JUL 2026
USDA safe zone — 165°F and above
Done is a temperature, not a time. Every figure on this page is a planning range; the green band is the only part that decides. For Cornish game hens it opens at 165°F and a 10-minute rest.
Source—USDA Food Safety & Inspection Service safe minimum internal temperatures—retrieved 2026-07
How this is worked out
- Anchor. Start from what USDA FSIS publishes for Cornish game hens — its safe minimum internal temperature of 165°F, and the FSIS roasting timetable where one exists for this cut.
- Rate. Convert the anchor into a planning rate at 400°F: a fixed published range, cross-checked against at least three independently published sources.
- Scale. This cut is timed by piece, not by weight, so the range is published as-is and widened to cover source disagreement rather than averaged.
- First check. The first thermometer reading is set at 85% of the low end of the range — early enough that an under-reading costs nothing and a late one cannot cost the meal.
- Gate. The time is only a plan. It is not done until a food thermometer reads 165°F in the thickest part, then rests about 10 minutes. Time never overrides temperature on this site.
- Round. Every printed figure is rounded to the nearest 5 minutes; precision beyond that would be invented.
plan_range = published range at 400°F
first_check = plan_low × 0.85
DONE ⟺ internal_temp ≥ 165°F AND rest ≥ 10 min
(USDA FSIS — the gate, not the clock)
SOURCE·USDA FSIS safe minimum internal temperatures·safe minimum for this cut·REVIEWED JUL 2026
400°F vs the other temperatures
Same cut, every temperature this site publishes for it.
| Oven temp | Estimated time | Notes |
|---|---|---|
| 350°F | 55 min – 1 hr 5 min | |
| 375°F | 45 min – 1 hr | most common |
| 400°F (this page) | 40 min – 50 min |
SOURCE·USDA safe-temperature guidance·timing ranges derived, see method·REVIEWED JUL 2026
When it is actually done
165°F internal
The USDA FSIS safe minimum internal temperature for this cut is 165°F, followed by a rest of about 10 minutes. The clock estimates; the thermometer decides. Every time on this page is a planning range, not a doneness test.
Sizing: Times are per typical 1.25–1.5 lb hen. Four hens on one pan roast in the same time as one — give them space so they roast rather than steam.
SOURCE·USDA FSIS safe minimum internal temperatures·cornish game hens row of the FSIS chart·REVIEWED JUL 2026
The clock tells you when to start looking. The thermometer tells you when to stop.
What the ledger does not tell you
- One hen per person looks generous; a 1.5 lb bird is genuinely two modest servings — halve them along the backbone after resting.
- They are small enough to dry out fast: check early, and probe the thigh exactly as you would a full chicken.
- Everything true of a whole chicken is true here at two-thirds scale, including the 165°F thigh reading.
Answers people ask
How long does Cornish game hens take at 400°F?
About 40 min – 50 min at 400°F (times are per typical 1.25–1.5 lb hen. Four hens on one pan roast in the same time as one — give them space so they roast rather than steam.). It is done at 165°F internal on a food thermometer, not by the clock.
What internal temperature is Cornish game hens done at?
165°F, measured with a food thermometer in the thickest part, then rested about 10 minutes. That is the USDA FSIS safe minimum.
Is 400°F a good temperature for Cornish game hens?
It is one of 3 temperatures this site publishes for this cut (350°F, 375°F, 400°F). Lower runs longer and more forgiving; higher runs faster with more browning. 375°F is the most common choice.
SOURCE·USDA FSIS safe minimum internal temperatures·doneness figures quoted in these answers·REVIEWED JUL 2026
More chicken timings
Where these numbers come from
Ranges are anchored to USDA FSIS published timetables where they exist, and derived from that anchor plus cross-checked published sources where they do not — widened to cover the disagreement between sources rather than split down the middle. The full reasoning is on the method page. If a figure here looks wrong, say so — corrections are prioritised.
SOURCE·USDA safe-temperature guidance·timing ranges derived, see method·REVIEWED JUL 2026
