I made blueberry muffins two times.

The first time I used unbleached flour. I don't remember if I used salted or unsalted butter then. They came out looking like from a bakery.

The second time, I used bleached flour and salted butter. They came out flat and didn't look nice. Was it the flour or the butter which made the difference?

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    – rumtscho
    Dec 20, 2011 at 12:23

3 Answers 3


The difference was definitely not caused by the salted or unsalted butter. It is also very unlikely that the problem was the flour.

Some of the usual reasons for muffins to come out flat are:

  • you forgot the baking powder (but then they are a complete failure, I guess you would have noticed if that had happened)
  • you measured by volume instead of by weight. This is very imprecise and can easily result in too little baking powder for the amount of other ingredients. You should use a recipe given in grams and a kitchen scale, if you want consistent results.
  • you let the prepared batter sit for too long before putting it into the oven, and the baking powder spent itself before the baking began
  • you baked at a wrong temperature, so the batter hardened either too early or too late.
  • you used ingredients at the wrong temperature (your eggs came from the fridge, your butter wasn't softened or you tried to soften it in a warm place and it melted, etc.) Always start with room temperature ingredients for baking.

You don't give us enough information to know which happened, but if you want to have good muffins every time, avoid these common mistakes and your muffins have a good chance of looking good in every batch.

  • +1 for measuring by weight. This is probably the single greatest improvement the home baker can make to his/her technique.
    – Andy Rice
    Dec 20, 2011 at 15:58

I'd bet you stirred the batter to much. When adding the dry ingredients, you should fold them in, not stir, and don't over fold either. Once the dry ingredients are incorporated, stop.


I'd say either baking powder or you opened the oven's door while it was baking. I've experienced that both of them could be the reason of the flat muffins.

Also, the oven should be hot enough when you want to put the batter in it. Sift the flour and mix baking powder with it before adding it to the batter.

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