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Why do my cakes sink in the middle?

(20 Posts)
redwallday Sat 15-Dec-12 19:07:58

It's driving me insane! For instance last night I made an 8 inch square sponge cake. I used 6 eggs and 12 oz of everything else. It looked like too mixture so I took some away and made 12 cupcakes with it. The rest I put in the tin and put in the oven. All was well until near the end when it just collapsed in the middle. I didn't open the oven it just collapsed on its own. Ive had problems with this before but thought we had cracked it as last few have been perfect! Obviously not sad I don't know what I'm doing wrong!

BumpingFuglies Sat 15-Dec-12 19:23:24

Too much air, ingredients need to be at room temp and use correct oven temp!

How did you mix it?

redwallday Sat 15-Dec-12 20:14:06

I've got a Kenwood Chef. I creamed the butter and sugar first then added the egg with a little flour each time. My oven was set at 180oc. I've got 2 oven thermometers in there and they were both saying different things! One was high at 190 and one was about 170 (very frustrating!). sad

redwallday Sat 15-Dec-12 20:14:20

And yes everything was at room temp

ohforfoxsake Sat 15-Dec-12 20:16:54

Did you use baking powder? I'm sure Mary Berry said on GBBO that its a baking powder thing - either too much or too little.

Sorry for being vague and unhelpful, but it rings a bell.

starfishmummy Sat 15-Dec-12 21:12:09

Overbeaten and/or oven too hot.

nannycook Sat 15-Dec-12 22:49:22

Oddly enough outfoxed the same thing happened to me last sun, i made 3 sponges in differe t colours, first 2 fine, 3rd one my phone went while mixing , i use a mixer also, so things didnt get my full attention they deserved, put it into the oven ad previous 2 only to find near the end of cooking without opening any doors right in front of my eyes the bloody thing sank, was not impressed.

VivaLeBeaver Sat 15-Dec-12 22:51:51

Try mixing it in a bowl with a wooden spoon and see if its better. You're less likely to over mix it. If it works you know that's the problem and then you can experiment with turning your kenwood off earlier.

redwallday Sat 15-Dec-12 23:07:30

Yes I added baking powder. I'm never really sure how much to add!! How much would you say for that size tin? Also what size mixture too as I said before it ended up looking too much to me. Thanks for your help everyone!

nannycook Sun 16-Dec-12 07:37:12

For 8inch tin buts thats round for me and usually square is more, i normally do 8 of everything and half tsp of baking powder if thats any help?.

TheSkiingGardener Sun 16-Dec-12 07:59:38

How much baking powder did you add and what flour was already in it? Too much baking powder definitely makes things collapse.

VikingVagine Sun 16-Dec-12 09:30:05

You have to be careful not to knock the oven when the cake is in.

redwallday Sun 16-Dec-12 10:55:05

I think I used about a tablespoon of baking powder! Too much? blush

redwallday Sun 16-Dec-12 10:55:24

Oh and it's self raising flour.

breatheslowly Sun 16-Dec-12 10:59:35

That sounds like way too much. Generally I don't add baking powder if I am using SR flour.

HipHopOpotomus Sun 16-Dec-12 11:02:28

As a general rule I use 1 teaspoon of BP per cup of flour. But SR flour has BP added already do you don't need to use it.

HazeltheMcWitch Sun 16-Dec-12 11:03:22

That's def too much raising agent. You don't really need to add any if using SR flour, unless the flour is old, or it's a special recipe. So all those eggs + SR flour + baking powder = a big initial rise with the heat of the oven, that could not then be supported, hence the collapse.

MrsMiniversCharlady Sun 16-Dec-12 11:07:55

Definitely the baking powder! A tsp would be OK to give SR some oomph but a tbsp is way too much.

TheSkiingGardener Sun 16-Dec-12 12:48:38

Yep, culprit identified. Try it without any baking powder if you're using SR flour, then maybe add a bit if you want it to rise more next time.

redwallday Sun 16-Dec-12 23:32:46

You guys are saints! I will try without BP tomorrow and report back. If this fixes the problem I may be inclined to send you all gift hampers! grin

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