The Mighty Mug Cake

Watch the mug cake how-to video over on our WTF? YouTube channel!

Check out this delicious, fast and easy recipe – WTF? book’s Mighty Mug Cake! Made with mixed berries and served with creamy unsweetened yoghurt, it is sure to be a hit this weekend!


Prep time:10 minutes

Cooking time: 2 minutes (including melting butter)

Carb count: 5.8g

Serves: 2


      • 3 tbsp + 1 tsp (50g) Butter (plus a little for greasing the mugs)
      • ⅔ cup (50g) Almond Meal (plus a little for dusting the mugs)
      • ½ cup (75g) Mixed berries 
      • 2 Eggs
      • 2 tbsp (30g) Xylitol 
      • 1 Tsp (2g)  psyllium
      • 1 tsp (4g) Chia
      • 1 tsp (5g) baking powder
      • ½ tsp (2ml) vanilla extract



Rub some butter inside the lining of your mugs then dust with a little almond meal – this creates a coating to help prevent the cake sticking. Gently melt the butter and the berries in the microwave until the butter is slightly melted and the berries are soft. Reserve a couple of berries for serving and mash the remainder with a fork. Crack the eggs into a medium-sized bowl, whisk them with a fork then add the berries, butter and the remainder of the cake ingredients.

Mix everything together well and spoon the cake mix into the mugs before cooking in the microwave for about 1 minute (mine took 1 minute 15 seconds in an 800w microwave). Once the mug cakes are cooked allow them to cool slightly, then turn out onto plates, you can garnish them with some whipped cream or full fat unsweetened yoghurt (I like the Greek stuff) and serve with the leftover berries. Or alternatively, eat straight from the mug!

Join the discussion 8 Comments

  • Serah says:

    Hi there… my wife and I are so enjoying the book and are feeling fantastic just a quick question is coconut butter any good. We used to use a bit of it, but wary now as it’s not mentioned anywhere that we can see in the book. Cheers.

    • What The Fat? says:

      Hi Serah,

      coconut butter looks good – it’s the cream from the coconut plus some of the fibre. Check to see if the brand you use has any other additives, but it should be yummy!

  • Kylie Stewart says:

    Will it affect the end result if I omit the chia seeds? They have too much quercetin and block my medication. Thanks

    • What The Fat? says:

      Hi Kylie, thanks for the question – no it won’t, it only slightly affects the texture of the cake. Cheers, Craig

  • Lealie says:

    Do you really believe food cooked in a microwave is safe to eat?
    Why did the Rissians ban microwave ovens fora time?

    • What The Fat? says:

      Hi Lealie,

      we don’t think food heated in a microwave is different from food cooked in an oven, however poorly insulated microwaves can leak radiation while cooking. This is what the Russians were regulating, not the food itself. Check the safety standard on a microwave, and don’t stand next to it while it’s cooking.
      The Russians used high-powered microwave radiation to bombard the US embassy in Moscow during the cold war, which caused serious health problems for the US staff, but these transmitters were more like radar sets than home ovens, which are low-powered, insulated, and even if leaky not able to transmit radiation over any distance. The radiation is electromagnetic (like a cellphone) so is immediately gone when the oven turns off – this is not the same thing as radioactivity – the effect cannot linger in matter, except as heat. But do check safety standards and seals and don’t hang over the microwave if you use it a lot, and make sure food cools properly before eating it, as you would with food heated in an oven.

  • Julie Greig says:

    yum! thank you – handy for morning tea!

    • Maureen says:

      I find watching videos very helpful – keep that up – really helps with all recipes.
      Just wanted to say I don’t feel my microwave oven is destroying me and like this quick recipe via microwave :). I don’t make many desserts but good to have health LCHF recipes to try. This was very nice – really enjoyed.

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