Brownies still runny in the middle? How to tell underbaked from fudgy
A properly fudgy brownie looks underbaked when it comes out of the oven. Here's how to tell the difference before you ruin the batch.
You take the brownies out, the middle wobbles, a skewer comes out wet, and you put them back in "just to be safe" — and end up with something dry and cakey.
The problem is that a correctly baked fudgy brownie and an underbaked one look almost identical in the tin. Here is how to tell them apart.
The skewer test, properly
Everyone knows to use a skewer. Fewer people know what the result should look like for brownies specifically, because it is not what you want for cake.
- Clean skewer — overbaked. For cake this is right; for brownies you have gone too far.
- Moist crumbs clinging to it — this is done. Stop here.
- Wet, glossy batter that runs — genuinely underbaked. Back in the oven.
Test about 5 cm in from the edge rather than dead centre. The exact middle is the last place to set and will read wetter than the batch as a whole.
Brownies keep cooking after they leave the oven
This is the part that catches people. A hot metal tin holds a lot of heat, and the middle of a brownie continues to climb in temperature for several minutes after it comes out.
A brownie pulled when the centre looks fully set will be overbaked by the time it cools. You are supposed to take it out looking slightly underdone.
They also need to cool completely in the tin — ideally two hours or more. Brownies set as they cool, not in the oven. Cutting into them warm is the single most common reason people conclude the middle was raw when it was fine.
If the middle is genuinely raw
Edges firm, sometimes overcooked, and a middle that is still liquid batter. Four likely causes:
The oven is too hot. Most domestic ovens are out by 10–20 °C, and many run hot. Too high a temperature sets the outside long before heat reaches the centre. An oven thermometer costs very little and is the only way to know; do not trust the dial.
The tin is too small or too deep. Batter meant for a 23 cm tin poured into a 20 cm one is far deeper, and the centre needs considerably longer. If you have sized down, drop the temperature by 10 °C and add 10–15 minutes.
You used glass or ceramic. Both conduct heat more slowly than metal, then hold it. You get overdone edges and an underdone middle. If glass is all you have, reduce the oven by about 10 °C and expect a longer bake.
The oven was not preheated. Batter that sits in a warming oven spreads and separates before it starts to set.
Rescuing a batch
If you have cut in and found genuinely liquid batter, it is fixable — cover the top loosely with foil to stop further browning, and return it to the oven at about 160 °C for 5–10 minutes. Check again with the skewer.
If it has already cooled completely, reheating rarely works well; the texture goes grainy. At that point the better outcome is to lean into it — chill the tin thoroughly and serve them as a dense fudge-style slice, or crumble them over ice cream.
Runny versus gooey
Worth separating two things people use interchangeably. Gooey is a texture: dense, moist, slightly sticky, and entirely correct. Runny is uncooked batter that flows. If a cooled brownie holds its shape when cut and simply feels dense and moist, it is not underbaked — it is a good brownie.
How fudgy a brownie is in the first place is set by the ratio of fat to flour rather than by baking time, which we covered in fudgy versus cakey brownies.
The short version
- Pull them when a skewer shows moist crumbs, not clean, not wet batter
- Test slightly in from the centre
- Cool completely in the tin — at least two hours
- Check your oven's real temperature with a thermometer
- Match the tin size the recipe specifies, or adjust time and temperature
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Make itBest Fudgy BrowniesFull recipe with measurements →
Common questions
How do I know when brownies are done?
A skewer inserted about 5 cm from the edge should come out with moist crumbs clinging to it — not clean, and not coated in wet batter. The edges should look set while the centre still wobbles slightly. They finish setting as they cool.
Why are my brownies still runny in the middle but cooked at the edges?
Usually the oven is running too hot, so the outside sets before heat reaches the centre. It can also be a tin that is smaller or deeper than the recipe intended, or a glass dish, which conducts heat more slowly than metal and then holds it.
Can I put underbaked brownies back in the oven?
Yes, if they are still warm. Cover the top loosely with foil to stop further browning and return them to a 160 °C oven for 5–10 minutes. Once they have cooled completely, reheating tends to make the texture grainy.
Are gooey brownies undercooked?
Not necessarily. Gooey is a correct texture for a fudgy brownie — dense, moist and slightly sticky once cool. Underbaked means uncooked batter that still flows. If a cooled brownie holds its shape when cut, it is fine.
