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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

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. 04/18/2015 at 4:55 am

    I did it! First time ever! :) it was fun making it. I added a Pastillas ice cream on top (before serving) just because I can’t find any vanilla ice cream at the moment. Will try the vanilla one next week.

  2. Denice Webb
    04/19/2015 at 7:20 pm

    I just have to tell you that I made cake in a mug cake using your recipe, and it’s absolutely delectable, delicious, and decadent! I left out the hazelnut because I didn’t have any but it is nonetheless the moistest cake! Thank you for working on this recipe and getting it right , Because we get to benefit as well as you!

  3. Toni
    04/20/2015 at 12:24 am

    Perfect, absolutely delicious, didn’t add any spread and it was very moist. Thankyou

  4. Ellie
    04/20/2015 at 9:05 am

    I used butter instead of vegetable oil, just because I didn’t have any in the house but this is delicious! Best mug cake I’ve tasted

  5. Lori
    04/21/2015 at 7:00 pm

    Moistest (is that a word) LOL Best chocolate mug cake ever! THIS is what I have been looking for! Thank you!

  6. Surya
    04/22/2015 at 1:55 am

    This is amazing, my first attempt at mug cake and it came out moist and delicious. Thank you!!!

  7. Zoe
    04/22/2015 at 9:58 am

    I made this for my family and used chocolate pieces instead of the spread, it was SO good that I recommended it to the rest of the family and made it again!

  8. Leanne
    04/22/2015 at 11:02 am

    I’ve never made a mug cake before and am going to try this! I was wondering if you could possibly do the same but using WHITE CHOCOLATE?!?

    I LOVE white chocolate and would love your opinion!!

    • Julie
      04/23/2015 at 7:43 am

      White chocolate? Meaning like putting white chocolate in the center?

  9. Nadine
    04/23/2015 at 6:52 pm

    This is such a fun recipe! I’d made a couple of mug cakes in the past and wasn’t impressed but your recioe is really good! I used nutella the first time and Mrs.Richardson’s butterscotch caramel the second time. Both were great! The nutella kinda gave it more of a molten cake taste which was awesome and the caramel really complimented the chocolate. Next time I’ll use a little espresso powder in the cake and drop some melted chocolate mixed with a tiny bit of bourbon in the middle! Yum!

  10. Jaime
    04/23/2015 at 8:40 pm

    Yummo! We’ve done this a few times for our lactose intolerant daughter subbing lactose free milk or coconut milk and its delicious! Tonight we didnt have either and used water… It was still delicious (in fact i may just use water from here out)

  11. Joy
    04/23/2015 at 11:36 pm

    So good! I didn’t have unsweetened cocoa, so I used some Starbucks hot cocoa mix, which is just cocoa and sugar, and added an extra tablespoon of sugar. I also used coconut oil instead of vegetable oil. Perfect for those night time chocolate cravings! Now I want to add things… Chocolate chips! Dried cherries! Thanks for the recipe!

  12. Maeve
    04/24/2015 at 1:57 pm

    It worked perfectly!

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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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