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The Moistest Chocolate Mug Cake

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. Kjc
    09/24/2015 at 8:44 pm

    Texture was wonderful and flavor was good too…I found it extremely lacking in sweetness, though. This might be my new go-to mug cake recipe if I just add a bit more sugar, like is suggested in the recipe itself.

    Also, good job on the portions. The last mug cake I made was enough for like a zillion people, this one was just right!

  2. Loren
    09/25/2015 at 1:18 am

    This is AMAZING! I was craving this around midnight (whoops!) and didn’t have veg oil or milk, so I improvised with coconut oil and hazelnut coffee creamer haha. I just happened to have some whipped cream and VOILA it tastes like one of those Death by Chocolate desserts you’d pay $10 for. And it only took me 5 minutes tops! Thank you so much for sharing!

  3. Kim
    09/25/2015 at 5:09 pm

    The best mug chocolate cake I ever tried… very very moist…hum…Yummy

  4. Erin
    09/26/2015 at 2:35 am

    This cake was absolutely delicious! Really quick and easy, surprisingly had all the ingredients at home :)

  5. Alison
    09/26/2015 at 9:45 pm

    By far the best cake in a mug recipe I have tried. I stuck a big marshmallow in the center instead of spread or PB and oh my yummy!!!

  6. Dani McG
    09/27/2015 at 8:18 pm

    Soooo simple, delicious and a great treat to share with the hubby so the calories are split :) and therefore don’t count in my mind. Thanks for the recipe!

  7. Claire
    09/28/2015 at 6:14 pm

    This is THE moistest mug cake I’ve ever had!! Thank you so much for the recipe! I used coconut oil instead and it’s HEAVEN!!

  8. deebbie
    09/28/2015 at 9:23 pm

    when ever i can get my hubby to make this for me. It is truly a treat.

  9. Frances
    09/30/2015 at 9:09 pm

    I just made the mug cake and it came out really well. I added a Tbs of peanut butter which is very tasty. Thank you!

    10/01/2015 at 4:52 am

    Hi!~ This is really good!!! I was wondering if I could just multiply the ingredients by 6 to get a bigger cake using a dish instead of a mug. Would that be okay or would it affect final taste and texture? Thank you!~

    • Julie
      10/02/2015 at 7:42 am

      I’m glad you enjoyed it! I’m not quite sure if it would turn out as an entire cake, mainly because most regular sized cakes need at least an egg in it and this doesn’t have an egg.

  11. JeanB
    10/01/2015 at 7:32 pm

    I just tried it – it was AWESOME – I made two at a time – my husband loved it as well. I added mini chocolate chips into the batter (coated them in cocoa first) and they melted and it was very moist & yummy! Thank you for the recipe!

  12. Anon
    10/01/2015 at 9:02 pm

    Unsure but would anybody know how you could change the all purpose flour and baking poweder into self raising flour? Having a tricky time trying to find the ratio and convert it as i dont have baking powder!

  13. Shagun
    10/02/2015 at 2:16 am

    Your mug cake was a super hit
    I loved it. THANK YOU

  14. Steph
    10/02/2015 at 7:56 am

    WOW!!! I googled ‘best mug cake’ and after reading how you came up with the recipe was excited to try it and HOLY WOW! This IS the best mug cake recipe ever! Thank you! I threw a few chocolate chip morsels in instead of the hazelnut spread. The texture, the taste, the moistness…..everything spot on!! This will be the only recipe I use from now on to satisfy my chocolate cake cravings…I seriously think it was way better than standard chocolate cake too…I can’t wait to make this again!

  15. Temeekaj
    10/02/2015 at 11:59 pm

    By far the best recipe I’ve tried thus far! I added the peanut butter with semi sweet chocolate chips! Totally hit the spot! Thank you for finally coming up with a great recipe! Thank you!

  16. Tashi
    10/03/2015 at 5:56 pm

    My first ever chocolate-cake-in-a-mug. Zomg. Soooo lush and I didn’t even put a topping on it. I don’t like things very sweet so the sugar as stated was absolutely perfect. You’ve changed my life!

  17. Tashi
    10/04/2015 at 2:31 pm

    Made it again tonight. *hangs head in shame*
    100 seconds is just right in my microwave. And easy to remember. Oh, and I just mix it all together right there in the mug. Easy. (Use a big mug so it doesn’t spill.)

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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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