Protein Coffee Cake (in a mug!)

Protein Coffee Cake (in a mug!)

Protein Cake.. made in a mug? Yes, it’s true!


This is the perfect post-workout treat and it takes literally minutes to make!


This Protein Mug Cake is the balance of carbs and protein to replenish energy stores and help to rebuild muscle.. and did I mention that it also tastes incredible?! Adding the coffee part is completely optional.. you could add cocoa powder, vanilla, sweetener or just keep the recipe simple and leave it out!


P.S you don’t have to work-out to enjoy this ‘healthy cake’ – it makes the perfect snack any time of day.. I’ve even had it for breakfast!


Protein Mug Cake

Protein mug cake



Protein Coffee Mug Cake


  • 25g rolled oats or oat flour
  • ~30g/1 scoop protein powder
  • 1 tsp coffee granules - optional
  • 90ml (1/3 cup + 1 tsp) milk or milk alternative


  1. Mix all the ingredients in a deep bowl or mug
  2. Microwave for 2 minutes (if the mixture rises after 1-1.5 minutes just push it back down!)
  3. Eat straight from the mug or tip onto a plate (allow to cool slightly & loosen the edges first before tipping it out) and enjoy with a dollop of yoghurt mixed with white hot chocolate powder (my choice!)

Nutrition Facts

Amount Per Serving

Calories 240

% Daily Value

Total Fat 5 g


Total Carbohydrates 22 g


Protein 26 g


* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.


*This blog post contains an affiliate link. Please read my disclaimer page for more information and for my policy on using protein powders in baking, gluten-free foods/baking and vegetarian/vegan recipes.

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  1. Rachel Bell
    May 4, 2013 / 6:36 am

    Just had this for breakfast! Eaten straight from the mug felt like I was having a naughty breakfast!!
    Very filling! More recipes like this please! X

    • Nics Nutrition
      June 27, 2013 / 11:21 am

      Hi Rach! Thanks for your comment- I’m planning on making ‘protein balls’ soon so hopefully they’ll be up your street too!!

  2. April
    May 12, 2013 / 6:01 pm

    Easy and simple to do, plus it tastes delious! What more could you ask for. This is something I will definetly be making again (:

    • Nics Nutrition
      May 12, 2013 / 8:21 pm

      Thanks for your comment April – so glad to hear that you liked it! Nic x

  3. Avril
    May 16, 2013 / 7:24 pm

    Sorry to seem daft. Do you make instant coffee and take a tsp from that – you don’t just use the granules?

    • Nics Nutrition
      May 16, 2013 / 8:51 pm

      Hey! Yes it’s a tsp of coffee granules.. I should have been more clear so sorry! x

  4. June 4, 2013 / 4:50 pm

    I don’t own a microwave. Is there an alternative way to cook it? Thanks.

    • Nics Nutrition
      June 4, 2013 / 5:19 pm

      Hi! You could try baking it in the oven at 180-200 degrees C for 10-15 mins or you could try heating it on the hob – let me know how it goes!

  5. Beth
    June 9, 2013 / 1:04 pm

    Had for breakfast this morning and used chocolate protein powder. Perfect with natural yoghurt and really filling. I think I may reduce quantities next time or even keep some back for a snack. Thanks for sharing on twitter!

    • Nics Nutrition
      June 9, 2013 / 1:26 pm

      Hi Beth! Aw so glad to hear that you liked it. Thanks for your comment 🙂 Nic x

  6. Jo Howe
    June 15, 2013 / 4:56 pm

    Absolutely amazing !! Quick, easy & extra yummy…when cooked I put Greek yoghurt & blueberries on top & it was de-lish !! Highly recommendable, and lovely for an afternoon treat with a cuppa 🙂 thanks Nic !!

    • September 7, 2013 / 11:36 am

      Ooh that sounds lovely Jo! Thank you so much for your comment! Nic xx

  7. Amanda
    June 20, 2013 / 9:29 pm

    I made this tonight but I used summer fruits protein powder instead… The result… JAM ROLY POLY!! Amazing!! I can’t wait to try this with lots of different flavours!!

    • Nics Nutrition
      June 21, 2013 / 6:26 am

      THAT SOUNDS INCREDIBLE!!! Thanks for your comment and suggestion- I’ve only ever tried this recipe with vanilla or chocolate protein powder so must experiment! Nic x

  8. Emma Sturgess
    June 23, 2013 / 2:54 pm

    Yum just made with choc protein served with Greek yoghurt and strawberries saved me from a serious choc craving! It was delicious and made so much that I’m now full thank you so much x

    • Nics Nutrition
      June 23, 2013 / 3:08 pm

      Oooh I love the addition of strawberries!! Thanks for your comment Emma – it’s such a fab filling snack isn’t it!! Nic x

  9. Alice Clutton
    June 27, 2013 / 8:27 am

    Nic, I had this for BREAKFAST this morning – felt so naughty but it’s not! Tasted absolutely amazing and was ready in minutes. I had it with some quark and berries on the side – amazing recipe and will definitely be becoming a regular on my menu!

    It’s great that this tastes better than an unhealthy sugary pudding – I can have it instead of a naughty pudding as well without piling on the pounds 🙂 thanks!

    • Nics Nutrition
      June 27, 2013 / 11:12 am

      Hi Alice! Aw thank you for your lovely comment! Love your quark topping too! Never thought of it for breakfast, but yes – perfect!! Nic xx

  10. Haran Kiru
    July 30, 2013 / 9:19 pm

    Brilliant recipe! Takes 2 mins to do, can have it as a pick me up if your on low carbs and need a sweet fix! I had it with strawberries, awesome!

    • Nics Nutrition
      July 31, 2013 / 12:00 pm

      Thank you! Couldn’t agree more – love your addition of fruit too, super healthy 🙂

  11. Mark Cherry
    September 16, 2013 / 7:25 pm

    What a great idea.. Made it at work added some raspberries. Amazing.. Really didn’t expect the texture and taste to be so good! Going to try it with strawberry and vanilla protein next,

    • September 16, 2013 / 7:43 pm

      Aw thanks Mark! Going to upload your fab pic now too! Thank you! xx

  12. Lou Wilkinson
    November 11, 2013 / 7:13 pm

    Made with choc orange protein powder and skipped the coffee. Used almond milk and was lovely!

  13. Emma
    January 12, 2014 / 5:13 pm

    I made this super simple recipe for breakfast before my workout this morning and it was fantastic! So quick, easy and super tasty! I used cinnamon instead of coffee for a twist and served it with Total Greek Yoghurt, honey, blueberries and banana. AMAZING! Thanks Nic! xxx

    • January 12, 2014 / 5:18 pm

      Love your tweak! And your amazing picture 🙂 Thanks Emma! xx

  14. Jane
    February 20, 2014 / 11:09 pm

    First time i have made this, very impressed. Made with chocolate protein powder, next time I am going to try replacing the coffee with some orange zest 🙂

    • February 21, 2014 / 7:37 pm

      LOVE your tweak! Thank you for your comment Jane! Nic x

  15. Anna Gibson
    March 9, 2014 / 12:44 pm

    I tried this with a couple of teaspoons of low calorie hot chocolate as I don’t have any protein powder. And I used coconut milk. Tastes delicious but isn’t very solid like some of the pics on here. Do you think it needs the protein powder to make it more cake like?

    • March 9, 2014 / 5:10 pm

      Yes it does.. Maybe add some xanthan gum (you can find that in the free-from aisle – it’s a vegetarian thickener.. just add a small amount though!) x

  16. April 21, 2014 / 5:49 pm

    If you’re careful with the amount of liquid, this is also a great way to make a big bowl of cake-y porridge to enjoy in the morning. As long as it’s got the protein powder and enough oats, it seems to work made with espresso, soy milk, or water, and even when there are lots of sultanas, almonds and other tasty stuff in there. This recipe was a great find, as I never realised oats + protein powder would do this!

    • April 22, 2014 / 12:03 pm

      That’s great to know! Thank you for your comment 🙂 x

  17. Diana
    October 13, 2018 / 11:33 am

    Mine didn’t get solid, it was more like just warm cake batter. What could have gone wrong?

    • October 19, 2018 / 6:23 pm

      Hmmm, too much liquid or not long enough in the microwave? x

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