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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

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. Lexi
    07/19/2015 at 8:38 am

    Hi I would like to make these for teacher presents in a teacher mug do these cakes need to be eaten straight away or would they be ok to be eaten the next day?? Thanks xx ps they look amazing!M

    • Julie
      07/19/2015 at 4:05 pm

      They need to be eaten straight away. I would just mix the dry ingredients in a mug and give it as their gift then tell the what liquids to add to it to make the mug cake. Please credit my blog on the gift tag, hehe :)

  2. annika
    07/19/2015 at 10:06 am

    the texture was great…much better than ever other mug cake i’ve made. however, it was incredibly bland. it needed more sugar and cocoa powder, i honestly couldn’t taste anything :\

    • Julie
      07/19/2015 at 4:05 pm

      Even with the Nutella in the center you couldn’t taste anything? With the Nutella in the center you definitely don’t need more sugar or cocoa powder, unless you’re used to eating super sweet desserts. Did you add the Nutella in the center?

  3. Jennifer
    07/19/2015 at 5:47 pm

    Literally just made this as I too needed something sweet. Incredibly easy and delicious! I added several chocolate chips to the center of mine before putting in the microwave. Can’t wait to try it with peanut butter next time. Thank you!

  4. Rakel
    07/19/2015 at 11:15 pm

    I was in the mood for chocolate but didn’t have any in the house. It’s slim pickings before I get to the grocery store. Enter mug cake. I whipped this up easily and it was so tasty! I made some modifications though. I didn’t have milk but I did have half and half so I used that, and instead of vegetable oil I melted butter. I’m all out of Nutella so instead I used some of this caramel I had in a jar and put a little whipped cream on top. Delicious!

  5. Megan
    07/20/2015 at 3:45 pm

    Awesome recipe – I’ve been craving fudgy chocolate cake for days and this REALLY hit the spot. So simple to make and so delicious. I put a dollop of Wowbutter in mine (nut free spread that tastes like peanut butter). It didn’t disperse or go gooey, which was a shame but I’ll try experimenting next time I fancy mug cake. Served with a dollop of cream. Delicious. Thank you!

  6. Audrey
    07/21/2015 at 12:23 am

    This looked really good. I agree with you about a whole egg being way too much for a mug cake!
    I just tried this recipe (at 11pm in my bathrobe: don’t judge! ;-) ) but, because I’m celiac, I used an all-purpose gluten free flour. The results were NOT good. I don’t blame the recipe at all, since GF baking can be so very different from conventional baking.
    I don’t leave this comment to bash the recipe, as it looks like a winner, but to let other celiacs know. Maybe someone has an awesome GF mug cake recipe?? I’d love to try it!

    • Pamela
      07/25/2015 at 3:07 am

      For GF flour, you would need to use less flour since its more dense when it bakes. I’ve done lots of baking with substituting GF flour instead of regular flour, I use Pamela’s all purpose Gf flour.

  7. Hannah
    07/21/2015 at 6:24 am

    Truly delicious! Simple yet totally perfect. Boyfriend absolutely loved it too.

  8. Dee
    07/23/2015 at 12:57 pm

    My first ever mug cake and I chanced upon this recipe. It worked like MAGIC! All done in less than 5 minutes and it tastes divine! Perfect for the sudden chocolate cravings….so simple and tastes absolutely wonderful!

  9. amy
    07/23/2015 at 1:33 pm

    Nice fudge texture but I think could have been a Lil sweeter. I used 2 tbsp coco oil in place of veg oil. Still – did the job when I had no eggs in the house & a cake craving

  10. Natalie
    07/24/2015 at 9:11 pm

    Sorry, Im not good at english.
    Bad. It was chocotly, but the flavor wasn’t very exiting, the hazlenut spread helped, but if you rely on a premade topping to make your desert edible, you do badly.

    • Bella
      07/28/2015 at 12:47 pm


      I am sorry that this recipe did not work for you but it is a bit rude to insult someone who came up with a delicious and QUICK recipe and took the time to post it so clearly. Maybe you did something wrong or your microwave timing is off but there are plenty of others who tried this recipe and loved it so…….

  11. Alexandra
    07/25/2015 at 7:42 am

    Hey what does 1/4 cup + 1 table spoon of milk mean? Sorry i don’t do much cooking or baking… :D

    • Julie
      07/25/2015 at 9:20 am

      It means 1/4 cup of milk PLUS another 1 tablespoon.

    • 07/26/2015 at 5:00 am

      Thank you Julie, the best Chocolate Mug Cake ever! I did use melted butter instead of the oil and it comes out perfectly every time! Now I have to try your Vanilla…!

  12. Michelle
    07/26/2015 at 6:30 am

    So easy and so so delicious. Just perfect, thank you so much!

  13. Aly
    07/26/2015 at 9:08 am

    Yum, I discovered your recipie a couple of weeks ago and it has been a big hit in our house. I so agree one egg for one mug cake way too much so I was glad to find your version which was egg free.. We did find it made a lot, enough for two people but hubby and I like different fillings in the centre. So after making it multiple times this week I sat down and played with the measurements. Now my pantry has a jar of dry mix and all I have to do is add 1 tbsp of oil and 2 of milk to 1/4 cup + 1 Tbsp of dry mix and it makes 1/2 the cake with even less hassle cause I only gave to get out one jar now.!!The plan is to give the dry mix as a gift to a friend whose hubby is away for work for when she needs a little something as a reward after a long day and she has the kids in bed, just worried it won’t get to her. Thanks again

  14. Siobhan
    07/27/2015 at 7:23 am

    I’m 5 months pregnant and was craving something sweet and chocolatey that didn’t require baking at 8:30pm. Then I discovered this mug cake recipe. Was very sceptical to start, but it was so tasty I’m thinking of naming my 2nd born after you x

    • Julie
      07/27/2015 at 8:08 am

      Hahaha, I love it!

  15. Afifa
    07/27/2015 at 6:22 pm

    Love it, simply amazing and quick, thanks for sharing!

  16. Eden O’Clair
    07/28/2015 at 9:59 am

    Beautiful texture. Really easy and quick to make, I suggest adding a little extra vannila and making some fresh whipped cream to plop on top after its done cooking. As well as the Nutella, a threw in a gob of creamy peanut butter. It was like eating the worlds best peanut butter cup.

  17. Kathleen
    07/28/2015 at 5:14 pm

    I am not disappointed with this recipe!!! i needed a recipe without butter and this was perfect!!! i added chocolate chips and whip cream to the top of mine and it was so good !!! thank you

  18. Charla
    07/29/2015 at 1:01 am

    My daughter and I made two of these FABulous cakes. Our ancient microwave was undaunted by the sheer brilliance of your delectible design. I only had PB on hand, fab nonetheless, and to the dry ingredients we added a pinch of espresso and cinnamon. Perfect chocolate masterpiece. THANK YOU!

  19. alexis
    07/29/2015 at 1:53 pm

    THIS Is THE BEST mug cake on the internet. I make it with peanut butter and when I cook it, not all the batter turns cake-like. The center is still liquid and hot making it ooey-gooey like molten lava cake. It’s just perfection!

  20. ashlie
    07/29/2015 at 11:22 pm

    My husband and i both loved it!

  21. Eiko
    07/29/2015 at 11:43 pm

    THANK YOU Julie! This is the best microwave cake! My husband thinks it’s magic and asked me to make it several times already…we can be eating at a restaurant and he’ll pass on dessert because he wants to eat this cake at home 😄 I put peanut butter, I’ve also put a dollop of cherry jam…simply awesome…thank you again!

  22. Beth
    07/30/2015 at 2:23 pm

    OH.MY.GOODNESS!!! I just made this for my kids as a extra special treat as they had to wait in A&E for 6 hours as my youngest broke his foot! I added a ton of chocolate in place of the spread, another spoon of sugar and cocoa powder, some cherries and topped it off with a spoon of icecream! AMAZING, they said they want to go to A&E again!!! Thanks, soooooooooo much!

    • Julie
      07/31/2015 at 7:11 am

      Oh gosh! I hope your youngest is ok!! And definitely no more A&E just for this mug cake ;) make it whenever!! ha

  23. 07/31/2015 at 2:53 am

    i made this, or tried to. i did exactly as the directions say and it wouldnt cook. it just boiled and overflowed. disappointed as shit

    • Julie
      07/31/2015 at 7:09 am

      Lol considering your name is ‘satan’ and your website is ‘die .com,’ I will take this comment w/a grain of salt.

  24. Liz
    07/31/2015 at 11:17 am

    I think one of the greatest things about mug cakes is that you can modify the recipe really easily and still get a great Result. I used half and half, coconut oil, and raspberry jam because I didn’t have the other ingredients lying around . The jam sunk down to the bottom and became a kind of syrup for the cake. Coconut oil tend to make mug cakes heavier but I prefer that instead of the crumbly dryness most recipes turn out as. It was super moist and satisfying! Thanks for sharing. This was a lovely chocolate treat and I totally recommend that other people try it!

  25. Saadia
    07/31/2015 at 4:40 pm

    I tried your recipe and it was really good..just will add a bit more sugar next time…..loads of thanks for sharing

  26. Sanila
    07/31/2015 at 5:50 pm

    I am in love with this cake!! I made so many mug cakes but this one is by far the best chocolate mug cake i have ever had! I made this cake at 2 in the morning as I was unable to sleep and a had a chocolate craving and I found your delicious recipe on the internet and gave it a go! I just love it soo much thanks julie for such an amazing recipe :)

  27. Lucy
    07/31/2015 at 8:55 pm

    Do you have any nutritional info on this recipe? Loved it by the way. Best mug cake I’ve tried by far.

  28. Charmaine
    08/01/2015 at 1:51 am

    Oooh, turned out great. I love this mug cake.

  29. NJK
    08/01/2015 at 9:53 pm

    Hi, just made these in oven in 7 oz ramekin. Doubled the recipes so made 4. Sprayed with Pam. Baked at 350 for 15 min. Dilicious!

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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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