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The Moistest Chocolate Mug Cake

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This is the moistest chocolate mug cake you will ever have. It’s not spongey or dry like other mug cakes! I personally tested this recipe FOUR times to finally achieve this amazing texture!

The moistest chocolate mug cake you will ever have! It's not spongy like other mug cakes! Recipe on

The moistest chocolate mug cake you will ever have! It's not spongy like other mug cakes! Recipe on

The moistest chocolate mug cake you will ever have! It's not spongy like other mug cakes! Recipe on

Ok, so you’re probably so over mug cakes and you’re probably rolling your eyes at me right now but STOP! I promise you this isn’t like any other mug cake out there. I’ve tried a bunch of mug cakes and I hated them. I thought they were a really neat concept for a quick dessert fix but nothing would ever beat baking an entire cake or cupcake. I hated that all the mug cakes came out SPONGY and they had the grossest texture.

Last week, I was CRAVING chocolate like none other. It was a pretty dire situation. We didn’t have any desserts in the house because I hadn’t been baking and I didn’t want to run out to get anything so I thought I’d give a mug cake a shot. It ended up turning into a recipe development hour because the first batch came out horrible. Like, I threw it in the trash can and it was just one lumpy sponge thing. The second one was slightly better but still really bad. The third, I switched out some ingredients and added a little bit more of some and it came out how I wanted but I knew it could’ve been better so on the fourth try, I finally got it to work and the exact texture I wanted.

You guys, this is the moistest chocolate mug cake I’ve ever tasted before. I’m not joking! You have to try this and see for yourself. It’s a great alternative to baking an entire pan of brownies & it’s a super awesome quick fix for that chocolate craving! Jason loved it and said it tasted like brownies! Yay :)

The moistest chocolate mug cake you will ever have! It's not spongy like other mug cakes! Recipe on

The moistest chocolate mug cake you will ever have! It's not spongy like other mug cakes! Recipe on


The Moistest Chocolate Mug Cake
Recipe type: Dessert
Prep time: 
Cook time: 
Total time: 
Serves: 1
  • ¼ cup all-purpose flour
  • 2 tbsp. unsweetened cocoa powder
  • ¼ tsp. baking powder
  • 2 tbsp. granulated sugar (you can add 1 tbsp. more if you like it a bit sweeter)
  • ⅛ tsp. salt
  • ¼ cup + 1 tbsp. milk
  • 2 tbsp. vegetable oil
  • 1 tbsp. hazelnut chocolate spread
  1. In a medium bowl, whisk together dry ingredients.
  2. Whisk in the milk and vegetable oil until all ingredients are combined and batter has no clumps.
  3. Pour batter into a microwave-safe mug. Mine was a 14-ounce mug. You want enough head space for the cake to rise without pouring over.
  4. Add 1 tbsp. of hazelnut chocolate spread in the middle of the batter. Just drop it in the middle, no need to push it down and sink it in the batter.
  5. Place a paper towel into the microwave and set the mug on top (this is to catch any batter if your mug cake overflows).
  6. Microwave mug cake for 70 seconds on high (PLEASE READ NOTES CAREFULLY BELOW)
  7. Carefully remove from microwave and enjoy!
Please note that ALL microwaves are different therefore can yield different results and can overcook this mug cake if you aren't careful. My microwave is 950 watts and I cooked mine on 100% power for 70 seconds. Knowing this information, it may help you better judge how long to cook yours for and at what power.

You can totally omit the tablespoon of chocolate hazelnut spread if you want or use a different spread of your choice (peanut butter, biscoff, etc.). I just thought it made the cake even more moist but the cake itself is moist enough without it!

**This recipe is specifically made for the microwave. I developed it for the microwave. I don't know cook time or temperature for an oven...I'd imagine it'd be a very quick cook time at a low temp., but since I didn't test the recipe for an oven, I cannot give specifics. Sorry!

No eggs? Correct. There are NO EGGS in this recipe. Why? Egg is what makes the mug cake spongy. If you think about it, when you bake a full-sized cake, you typically use 1 or 2 eggs...for a mug cake to use 1 egg is A LOT!

If you're looking for a VANILLA version, here is the link to The Moistest Vanilla Mug Cake recipe!




  1. Laurie
    05/28/2015 at 7:40 pm

    It is perfect. It is just what I was looking for. Thank you for posting.

  2. 05/29/2015 at 1:59 am

    This was perfect! My husband and I had just finished an amazing tri-tip and pasta salad dinner and I was craving chocolate but hadn’t planned for dessert… He was amazed that something so delicious could be whipped up in a few minutes. Thank you for the recipe!
    P.S. I don’t know the exact power of our microwave, but it’s strong… I cooked for 60 seconds and it was perfect!

    05/29/2015 at 1:26 pm

    Thanks so much – great recipe. My daughter and her friend could not believe their eyes when I walked in with cake only 5 minutes after they asked whether there was anything sweet in the house!

  4. Eiko
    05/30/2015 at 1:49 pm

    Hi Julie, I’ve made your mug cake several times now….it is The Best! Thank you! I put a spoonful of peanut butter in it and my husband loved it, he can’t believe its microwave cake :)

    • Jojo
      06/17/2015 at 1:09 am

      I have only three words “I AM HOOKED!”
      and one mre word “DELICIOUS!”

  5. 06/03/2015 at 12:30 am

    wow! I’ve tried and made alot of mug cake recipies, but this is by far one of the best! And, you don’t even need an egg! Perfect!

  6. Hina
    06/05/2015 at 1:32 pm

    Mine taste pathetic! I do not know what I am missing. I think egg must be added. Too hard!

    • Julie
      06/05/2015 at 1:38 pm

      Then go ahead and try it with an egg.

      • Alexis
        06/09/2015 at 11:40 pm

        Thank you so much I was hoping for a cake that would be quick and easy and still come out good and found this. It was very good and satisfying. Well done keep making recipes like this, you’re good at it ;)

  7. mackenzie
    06/05/2015 at 4:02 pm

    This is awesome! I just added a few chocolate chips and it was so moist and delicious. My son has severe allergies to dairy, peanut and even egg so we were in a crunch because we had to go to a wedding and I didn’t have any cakes made or any cupcakes in the freezer. I found this recipe and it’s absolutely perfect! Thank you so much!

  8. mackenzie
    06/05/2015 at 4:04 pm

    Also, i did add 1 extra tablespoon of sugar :)

  9. Jojo
    06/06/2015 at 12:48 am

    I like you was having a serious craving for chocolate and nothing in the house. I had all the ingredients except the hazelnut spread so I used Hershey chocolate syrup instead. Delicious. And yes I added a bit more sugar. Not a whole tablespoon, maybe half. Thank you for saving the day. My first ever mug cake! Delicious

  10. Lee Anne
    06/06/2015 at 8:51 pm

    Wonderful good cake! I used coconut oil in place of vegetable oil, and only used 1 TBS of sugar. Didn’t have Nutella so used a few semi sweet chocolate chips. Nice quilt finish to a meal. You can dress it up with some rasperberries and spearmint!

  11. Alyssa
    06/08/2015 at 7:06 am

    Really nice, I definitely suggest coconut oil, as the vegetable oil had an impact on the taste, and I only cooked mine for 60 secs in my microwave.

  12. Jules
    06/08/2015 at 3:29 pm

    AMAZING! Every mug cake I’ve tried has been so dry – except for this one :) Super moist and chocolaty!

  13. Jade
    06/09/2015 at 6:22 am

    Absolutely delicious! I had some left over homemade butterscotch sauce – I added this to the centre it was amazing. Served with vanilla ice cream. Thank you for a wonderful quick dessert.

  14. Suparna
    06/09/2015 at 8:17 pm

    This was great! Good call on the egg! I think next time I’ll use hot chocolate powder and test results. Or add extra honey. I used honey instead of refined sugar. :) the possibilities are endless! A good way to tackle a chocolate craving. Thanks for posting this.

  15. Justine
    06/11/2015 at 6:45 am

    Omgggggggg this is fantastic

  16. 06/11/2015 at 3:59 pm

    Wow By far the best mug cake ive had!

  17. Grace G
    06/12/2015 at 5:58 pm

    This recipe is great! I am currently eating it as I type. I had never tried mug cake before and happened to stumble upon this recipe. I found that I may have overcooked it a tiny bit because my microwave is very old and I couldn’t find the wattage, so I was taking an estimate at the time and power. I will definitely make this mug cake again!

  18. Marilyn
    06/13/2015 at 9:13 pm

    It was one of those “gotta have chocolate and gotta have it NOW” evenings, and nothing in the house except cocoa powder and a few mini chocolate chips. Did a search and found you and your recipe. Perfect! Loved the texture! I agree with your assessment about leaving out the egg because a whole one in one little cup of cake is too much! I will cook mine just a few more seconds next time because I intend to add a few more choc chips and maybe some dried cherries. Oh, for anyone interested, I used almond milk and it worked great. Thanks for the recipe!

  19. Afra
    06/14/2015 at 5:00 pm

    It was amazing, moist and perfect Thank you so much

  20. Carla
    06/14/2015 at 9:08 pm

    I made this recipe and it was so good! I used silk instead of milk and it came out delicious

  21. Normah
    06/15/2015 at 9:37 pm

    I baked this in my office microwave early this morning and my colleagues loved it. I’m going to make another batch tomorrow! Love it and thank you for sharing!

  22. Rachel
    06/16/2015 at 8:04 pm

    I wish I could give this recipe a true review, but I messed it up, so I can’t. What I CAN do is tell you that if you’re thinking of replacing the oil with apple sauce, just don’t do it. Haha.

  23. Tanya
    06/17/2015 at 5:47 pm

    It was perfect! How easy was that? I love to cook, but baking…meh.

  24. M
    06/17/2015 at 10:12 pm

    I’m very pleased with the texture, but I couldn’t get past the raw flour taste :/ any tips on what I’m doing wrong/what I can change?

    • Julie
      06/18/2015 at 7:36 am

      I’m not sure. Raw flour taste is because it’s undercooked. I’d cook it a bit longer.

  25. tannis
    06/18/2015 at 7:06 pm

    Delicious!! Soooo good ☺to die for!!

  26. Oli Xaca
    06/19/2015 at 1:32 am

    Loved this moist cake. I cooked this in a basic plastic/cereal bowl. As I thought it was too much mix for 1 std mug. Once cooked this recipe was really enough for 2 servings. However it was 2 good to save much 4 l8r. I used Almond Milk {unsweetened original}, canola oil & 3 (scant) tblspns sugar [bcuz I tasted batter b4 cooking + it wasnt sweet enough 4 me.] I love baking & this was my 1st time cooking a cake in a microwave + I’m very impressed.

  27. Jes
    06/21/2015 at 9:11 pm

    I never leave reviews and I cook 3 meals a day, but I just had to comment! This is the best mug cake ever! Made once with cherry jam and once with chocolate chips. Thank you! I’m adding this to my binder!

  28. Joni
    06/22/2015 at 5:01 am

    Thanks for this very easy recipe! Just tried it a while ago and the result was great enough to curb my chocolate cake craving. Not only was it very easy and very fast to make, the ingredients are common that they are readily available anytime. I microwaved mine for 60 seconds and used only 1 tbsp canola oil. It was still moist enough for me.

    Good luck on your future endeavors!

  29. Lexi
    06/22/2015 at 8:19 pm

    I love the texture! I added some cinnamon and 1/4 teaspoon of vanilla extract. Really good!

  30. Zulie R
    06/25/2015 at 12:34 pm

    Would it be okay if I used Cake Flour? No such thing as All Purpose flour down here in the south of Africa. Your mug cake looks so good and I am dying to give it a try.

    • Julie
      06/25/2015 at 6:54 pm

      You could definitely give it a shot! I’ve never done it that way but I’m sure it can’t hurt :)

  31. Jess
    06/29/2015 at 8:14 am

    This is by far the best cake in a mug I have ever tried. I’ve tried various amounts of recipes and they always seem to be too dry or just don’t satisfy my taste buds. I am so so pleased to have come across your recipe, absolutely delicious! :DD

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Thank you for taking the time to leave a comment! Please be patient when asking questions to a recipe as it may take up to 48 hours for me to respond. In the meantime, you may want to read previous comments to see if your question has already been answered. Please take a moment to read my comment policy as a gentle reminder of feedback etiquette. Have a great day!

As a general note: I do not have the time, unfortunately, to convert measurements for each individual recipe. You can simply convert any of my recipes into your desired measurement system by using Google to search for conversion calculators.

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