Magic Chocolate Custard Cake

Magic Chocolate Custard Cake

Magic chocolate custard cake all sometimes more commonly known as a custard impossible.  It is magic because the very runny mixture you pour into the baking dish turns into a set custard like cake that has a cake like crust on the top and bottom.

Full of eggs and milk and cocoa of course you’ll be having requests to make this for many years to come.


4 Eggs (I use 70gm size)
1 Tsp Vanilla Essence
1 Cup Caster Sugar
100gm Butter, melted
1/2 Cup Plain Flour
1/3 Cup Cocoa
2 Cups Milk, lukewarm
1 Tbs Icing Sugar for dusting
Strawberries to serve


1. Separate the egg yolks and whites.  Place the whites into the bowl of a stand mixer and whisk until stiff peaks form.  Remove from the bowl (if using a stand mixer as you will need the bowl to do the next steps) and place into another bowl.

Magic Chocolate Custard Cake

2. Clean the bowl and add the egg yolks, vanilla essence and sugar.  Whisk until creamy.

3. Add the melted butter and mix for a further 30 seconds.

Magic Chocolate Custard Cake

4. Add the flour and cocoa and using a spoon or spatula fold through until well combined.

Magic Chocolate Custard Cake

5. Gradually pour in the milk and continue to beat for another 30 seconds.

Magic Chocolate Custard Cake

6. Grab the egg whites and fold through the mix with a spatula.

7. The mixture will be really runny.  Pour into a lined baking dish (approx 30cm x 15cm) and bake in a 160 degree celcius oven for 45 minutes to 1 hour.

Magic Chocolate Custard Cake

Allow to cool on the bench and then place in the fridge to chill completely.

Magic Chocolate Custard Cake Magic Chocolate Custard Cake

Dust with icing sugar and then cut into desired sizes and serve with strawberries.

Magic Chocolate Custard Cake Magic Chocolate Custard Cake Magic Chocolate Custard Cake

Looking for more sweet recipe using dairy? Head over to The Dairy Kitchen blog or like The Dairy Kitchen Facebook Page

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13 Responses to Magic Chocolate Custard Cake

  1. Alison March 11, 2015 at 3:19 pm #

    Hi Amanda, this looks great! My only question is with step 5 when you talk about beating, do you mean with an electric mixer?

    • Amanda March 14, 2015 at 7:01 pm #

      Yes, with an electric mixer.

  2. belynda March 22, 2015 at 9:11 am #

    Store in fridge? And how long does it keep for?

    • Amanda March 22, 2015 at 9:29 am #

      It will safely last for 1 week.

  3. Malinda @mybrownpaperpackages March 27, 2015 at 8:05 pm #

    I have heard of these magic cakes but am yet to try one. They look so good! #FFF

  4. Danielle L March 28, 2015 at 11:53 am #

    I haven’t made a cake like this before, it looks like fun!

  5. Lauren @ Create Bake Make March 31, 2015 at 7:22 pm #

    This looks great Amanda! I made a plain custard version a month or two ago and have to admit I was VERY dubious about it turning out when I was making it. Love your chocolate version and will have to try it next 🙂

  6. Anne June 3, 2015 at 12:54 pm #

    This is so yummy it doesn’t last 24hrs! I am making it again today (must be my 3rd time since seeing this recipe) and I know my husband and kids will devour it 🙂

  7. Skye October 4, 2015 at 6:59 pm #

    Just popped my first one in the oven…fingers crossed it works out 🙂

  8. rachel November 8, 2015 at 7:45 am #

    Hey I made this yesterday it taste great but the bottom went a little like rubber not sure where I went wrong

    • Amanda November 10, 2015 at 5:56 pm #

      Mm I’m not sure. It could be that you over mixed it during the egg white folding in stage.

  9. Tracey August 8, 2018 at 8:47 pm #

    Can you freeze portions and defrost later in the fridge?

    • Amanda August 13, 2018 at 7:36 am #

      I haven’t tried it. I’m not to sure how it would go being frozen and defrosted due to the custard consistency.

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