Symptoms
- Meat or baked goods are consistently underdone at the recommended time
- Center of dense items like bread or casseroles stays raw longer than expected
- Extending cook time well beyond the recipe eventually works
- Multiple different recipes show the same pattern
Likely causes
- CommonOven running cooler than its display temperatureA drifted calibration or failing sensor causes the actual cavity temperature to run below what's shown.
- CommonFrequent door opening during cooking, especially for checking donenessEach door opening lets out significant heat that takes time to recover, effectively lowering average cooking temperature.
- PossibleOvercrowding the oven with multiple dishesToo many items block airflow and heat distribution, extending needed cook time.
- PossibleUsing a pan or dish size different from what the recipe assumedA deeper or larger dish than intended increases the actual cooking time needed.
- PossibleFailing heating element producing reduced heat outputAn element nearing failure can still function but not reach or maintain full heat effectively.
What to do
- Verify actual oven temperature with an oven thermometer placed in the center, comparing to the set temperature after a full preheat.
- Minimize door openings during baking; use the oven light and window to check progress instead when possible.
- Avoid overcrowding by baking one dish at a time when precision matters.
- Confirm your bakeware matches the size and depth the recipe assumes, adjusting time if it's notably different.
- Use a food thermometer for meats to confirm actual doneness rather than relying solely on time.
- Adjust the oven's calibration offset if the thermometer shows a consistent gap from the set temperature.
- If the thermometer confirms a large or inconsistent temperature shortfall, have a technician test the sensor and element.
Tools and parts
- Oven thermometer
- Food thermometer
Oven temperature sensorSearch: “oven temperature sensor replacement”
When to call a pro
If a thermometer confirms the oven runs consistently cooler than its setting, have a technician test the temperature sensor and element.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.