As my feature photo and process video shows, most of my cupcakes have sunk in the middle. A quick fix is to ice the cupcakes and hid the mistake; quickly piping a good dose of buttercream on top of each cupcake is sure to give an impressive finish to some disappointingly deflated cupcakes. There are few reasons why cupcakes sink or deflate in the middle and some of these reasons are easy to fix. Here I give you 4 possible reasons why my cupcakes sunk.
1. Over mixing
Over mixing the mixture once the leavening agent has been added is a sure fire way to end up with a deflated cupcake as a result. This also results in a denser than intended texture too. This is most likely the reason why this particular batch of cupcakes came out sunken in in the middle. I say this because I had my two little dude ‘helping’ in the kitchen and gave them each a go at mixing the batter. However, lucky for me they love baking; they love the result of baking even more and are not too fussed about how they look so long as they are delicious!
2. Premature Oven Door Opening
For those amongst us that are over eager and cannot wait for our baking to cook through, it can be all too tempting to open the oven door and give them a quick check to see if they are ready. However, this can lead to the inaction of the leavening agent causing the cupcakes to sink in the middle and not rise to their full potential. Moral of the story here is, be patient, good things take time, and just follow the recipe and keep those cupcakes in the oven with the oven door closed for the duration specified.
3. Incorrect Oven Temperature
Sinking cupcake centres can be the result of baking them in an oven that is too hot. If you think this may be your problem, try using an oven thermometer to make sure you are at the correct temperature for your recipe. Although you set your oven to a set temperature, the dial may not be well calibrated to the temperature it actually sets the oven too or you may have a faulty thermostat. If you find your oven is way off the dialed setting you might like to get your oven serviced and/or calibrated. Also, make sure you have chosen the correct oven setting ie. fan bake or standard bake, you can end up baking at too high a temperature if you accidentally set your oven to fan bake using the standard bake temperature setting.
4. Inactive Leavening Agent
How old is your baking powder? (or baking soda). Leavening agents such as baking powder and baking soda can expire and lose their raising power. If you suspect this might be the case, you can test if your baking powder or baking soda is still active by carrying out the following tests:
Check your baking powder:
Add 1/2 tsp baking powder to 1/4 cup hot water. If it fizzes or froths it is still good to use, if you get little reaction when you add the baking powder, then it is time to head to the store and buy some fresh baking powder.
Check your baking soda:
Similar to the good ole volcano experiment most of us are familiar with from our school day…add 1/2 tsp baking soda to 1/4 cup vinegar. Again fizzing and frothing is the positive sign you are looking for to say that your baking soda is still good to use in baking.
When carrying out either of these tests make sure that you use a bowl or jug with a wide opening as both test will cause the mixture to rise and froth and it is always better to keep it in the vessel being used rather than have a mess all over your kitchen bench to clean up.
If you prefer to watch a video on how to carry out these tests, check out the video below: