Melt-in-the-middle mug cake

Melt-in-the-middle mug cake

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(21 ratings)

Prep: 3 mins Cook: 1 min


Serves 1

This chocolate cake is made entirely in a mug. It requires no weighing, takes 45 seconds to cook and has a melty chocolate centre, perfect for a quick treat

Nutrition and extra info

Nutrition: per serving

  • kcal385
  • fat37g
  • saturates11g
  • carbs96g
  • sugars63g
  • fibre37g
  • protein15g
  • salt0.2g
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  • 2 tbsp sunflower oil
    Sunflower oil

    Sunflower oil

    A variety of oils can be used for baking. Sunflower is the one we use most often at Good Food as…

  • 1 medium egg



    The ultimate convenience food, eggs are powerhouses of nutrition, packed with protein and a…

  • 2 tbsp plain flour
  • 3 tbsp light brown sugar
  • 1 tbsp cocoa powder
  • dash of vanilla extract
  • 1 tbsp boiling water
  • 1 soft chocolate truffle of your choice (we used Lindt Lindor)



    The black Perigord truffle isn’t the only truffle.

    Truffles lauded as Black Diamonds…

  • ice cream or cream, to serve (optional)


  1. Using a fork, whisk all the ingredients, aside from the chocolate truffle, with a pinch of salt in a large mug (ours was 350ml).

  2. Push the chocolate into the centre of the batter, and microwave the cake on high for 45 secs until cooked on the outside with a liquid molten centre. Serve hot with ice cream or cream, if you like.

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Comments, questions and tips

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Sophie Moore's picture
Sophie Moore
14th Aug, 2019
So this might be the worst cake I’ve ever made. First off mixing boiling water and an egg did not go off to the best start, I’m fairly sure the egg started scrambling as I mixed the ingredients together. Upon putting it in the microwave for the recommended amount of time I was greeted with a solid mass with a puddle of unidentifiable moisture atop it. It moved as a singular entity as I prodded it to see if it was properly cooked, the moisture looking more concerning the longer I left it. I decided to put it back in the microwave for a bit longer in the hope it might improve. Sadly it did not. The texture was nothing like any cake I have ever seen, almost like play dough. Hoping it tasted better than it looked, I tried a VERY small mouthful. I was wrong. Chewing it seemed to do nothing other than make it ball up in my mouth. 0/10, would not recommend.
Victoria Hall's picture
Victoria Hall
6th Jan, 2019
Very eggy - quite disappointed.
Hester Davies's picture
Hester Davies
15th May, 2018
I tried this without an egg because we didn't have one and I used milk instead. it was really nice! (Serve with chocolate sauce; really improves it!)
25th Feb, 2018
Just made a disgusting mess, doesn't deserve any stars!
29th May, 2017
I think I followed the recipe exactly but the result was not good and had to be thrown away. The texture was not at all cake-like and my teenage daughter wouldn't eat it even though she loves cake and chocolate.
11th Apr, 2017
Super quick and easy. A great hit with the family.
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