“The One” Chocolate Mug Cake

$0.29 each

There comes a time in every girl’s life when she needs a chocolate mug cake.

Perhaps it’s one of those days where you just want to curl up on the couch all day and watch bad Lifetime movies about stolen babies (ladies, you know what I’m talking about). Or maybe you just ran four miles for the first time in your entire life and unless you counteract it immediately with a dessert, the universe will be thrown out of balance and implode, and the entire 2012 apocalypse will be all your fault. Or maybe it’s your birthday and everyone forgot so there was no cake. Okay, sorry, that last one was kind of depressing. Anyway, my point is, sometimes you just need a bite of cake to make things right. Just a bite.

I was never a fan of mug cakes because all of the versions I’ve tried have turned out rubbery and just not at all delightful. Until I found this recipe, which for me is “the one.” This is why I like it:

  • It’s not very sweet. (If you want it sweeter, add more sugar or some chocolate chips.)
  • It’s small. Other recipes I’ve tried have just been too big and they make me feel like I just over indulged. This one is just a few, rich, delightful bites.
  • There is no egg. I find that eggs make mug cakes rubbery or spongey and they also mean that you can’t scale the recipe in size. If you want a small cake, you can’t just split an egg in half, right?
  • There are a lot of variations. Add chocolate chips, use nutella, jam, or caramel sauce in place of the peanut butter, vegan-ize it by using soy milk in place of cow’s milk… lots of options.

Don’t be tempted to leave out the peanut butter (or jam, or whatever you drop in the center) because it helps keep the cake moist and rich. It simply wouldn’t be the same without it.

So, shout out to Jessie at Made From Scratch for experimenting with mug cakes until finding this perfect mix. You just saved the universe from imploding!

“The One” Chocolate Mug Cake

the one chocolate mug cake

4.6 from 18 reviews
"the one" chocolate mug cake
Prep time
Cook time
Total time
Cost Per Serving: $0.29 each
Serves: 1
  • 2 Tbsp all-purpose flour $0.02
  • 2 tsp unsweetened cocoa powder $0.02
  • 2 tsp sugar $0.01
  • ¼ tsp baking powder $0.02
  • a pinch salt $0.01
  • 1 Tbsp vegetable oil $0.04
  • 2 Tbsp milk $0.04
  • 1 Tbsp peanut butter $0.13
  1. In your mug, stir together the dry ingredients (flour, cocoa powder, sugar, baking powder, and a pinch of salt). Make sure there are no clumps.
  2. Stir in the vegetable oil and milk until the mixture is smooth. Drop a tablespoon of peanut butter into the center and push it down into the batter.
  3. Microwave on high for one minute and then enjoy!
Microwave power varies slightly, so you may want to experiment with the cooking time, give or take 5-10 seconds. One minute is a good place to start.

the one chocolate mug cake

Step By Step Photos

dry ingredientsMeasure the dry ingredients into a mug (flour, sugar, cocoa powder, baking powder, and a pinch of salt).

stir ingredientsStir them together until evenly mixed and there are no clumps.

wet ingredientsStir in the vegetable oil and milk until it is a smooth mixture. You can use soy milk and make this recipe completely vegan!

peanut butterDrop a dollop of peanut butter down into the center and press it into the batter (I should have pushed this in a little more, you want the PB to be mostly covered in batter).

cooked chocolate mug cakeMicrowave on high for one minute and you’ve got yourself a cake with a melty, peanut butter center!

chocolate mug cakeAnd then five or six delightful bites later, you’re done and you don’t feel like you do when you “accidentally” eat a whole pint of ice cream. …not that that ever happens.


  1. Tara says:

    I think its recipe is PERFECT, I never want to make a whole cake again when I can simply make a single serving for myself! The cake turns out SO moist and not too sweet, which leaves room for you to be creative with it. I’ve made this with nutella instead of peanut butter, and also with coconut peanut butter. The fact that the cake isn’t overly sweet, makes the additions for the cake perfect. I think the future I’ll be using oat flour instead of regular and using coconut oil instead of veg. I have tried subbing reg milk, for coconut milk and it turns out just fine!! Great basic recipe that leaves room for creativity to add whatever you want!! Thanks SO much!! Makes single life a little easier! Plus, no obscene amount of dishes to wash after! Haha.

  2. Annette says:

    I loved it. Just perfect. I had to use almond milk since we don’t have cow’s milk and it was perfect. I may try using coconut oil next time as another reader suggested

  3. Marian says:

    This was awesome. It really hit the spot on a rainy, cool day when chocolate was needed in my life. I made it exactly as directed but added just a splash of vanilla; maybe 1/4 tsp. Delicious!

  4. Lauren says:

    Made this with Stevia and no peanut butter and it was very good. I was actually surprised when I pulled it out of the ‘wave and saw the little cake in there! After a minute cook time mine wasn’t gooey at all, so I think next time I’ll try adding a few chocolate chips.

  5. Danielle says:

    This was absolutely wonderful. Sweet, chocolatey and salty peanutty at the same time and so easy!

  6. jacqueline says:

    I did not have flour, so I substituted with buttermilk pancake mix instead, it came out awesome!!!! Thank you!!!!

  7. denise says:

    I just made this deliciousness tonight. Oh my gawd it was so good. I used gluten free flour because my kid is celiac, and I added chocolate chips. It was also surprisingly large and filling.

  8. I think this recipe is great as-is, but after playing with it on and off several times, I’ve started using coconut oil for the oil, and vanilla almond milk for the milk. It makes the texture come out perfect, plus the added sugar in the vanilla almond milk makes it just sweet enough. And of course there is the bonus of being dairy-free. :)

    • Annette says:

      I will switch up the oil next time. That sounds good. I used almond milk to make it vegan and it was great

  9. Amanda says:

    This is PERFECT!!!!!!!! So easy to make! And it is the perfect amount for just a little sweet craving without feeling gross and eating a whole cake.

  10. Good, but needs tweaking, in my opinion. It’s got a lot going for it, so with some more sugar and chocolatey goodness, it’ll be perfect!

    Nutella next time. Extra couple tsp’s of sugar.

    Three stars as-is, but making it a tad more sinful will knock it outta the park!

  11. I thought the texture was very nice, but I found the cake extremely short on sugar. I would definitely use this recipe again, but with more sugar. Perhaps brown sugar would make it brownie like!

  12. Elizabeth says:

    Was craving something chocolatey, but didn’t want a huge amount. This definitely hit the spot! I used whole wheat flour (I’m pretty much out of all purpose), and it tasted just fine.

  13. anonymous says:

    I have a love/hate relationship with microwave mug cakes. Love the idea but hate the execution. This one was no exception. It was only edible because of the homemade peanut butter in the middle. The cake itself was disgusting as was the texture.

  14. April says:

    Just made this with no cocoa powder as I’ve given up chocolate for lent! Great recipe, just added another half tbsp flour, splash extra milk and drop of vanilla essence – was delicious! Used strawberry jam instead of peanut butter too! Thanks!

  15. I found this site yesterday & now I’m back after doing a search for egg-less mug cake- this site is apparently my new home. Anyhow, it’s 1am, I’m out of eggs & milk, so I subbed yogurt (recipe +1 tbsp) & halved the oil, instead stirring in the oily peanut butter & it came out cake-in-ma-face good.

    I also halved the sugar & it was still sweet enough, but I eat dark chocolate (like 80%, tastes-like-dirt chocolate) so I may not be the best source for that, but try it. But yeah- this is the first mug cake with these limited ingredients that didn’t come out a gummy mess. (Not gonna lie, I ate the gummy messes. Chocolate’s chocolate, yo.)

  16. Julia says:

    I made this just because it seemed amazing. And it turned out to be wonderful! Delicious! I can’t wait to make it again.

  17. Crystal says:

    I wanted to comment on my test since a few people wondered about substituting applesauce. I substituted the oil with unsweetened applesauce and the sugar with Stevia and did coconut flakes instead of Peanut Butter. It settled the chocolate urge for about 85 calories but my boys did the full fledged and I did have to take a bite of theirs just for comparison purposes of course ;) and the texture was only slightly different but still not to bad for a mug cake. It is doable but the original is a little bit better.

  18. Charlene says:

    In case anyone was wondering, this works very well if you just straight up omit the cocoa powder. You might want to add some vanilla or some chips of your chosen flavor if you end up going that route, though!

  19. Laura N says:

    I made this just now and it is perfect! I’ve tried several other recipes and this is the best one. The portion size is lovely. I added chocolate chips instead of peanut butter. I also used soy milk as that’s all I had. I really like the texture. It is light and fluffy and wasn’t tough at all or dry as some other recipes can get. (I think the recipes with an egg can make it tough actually) I’ll definitely be making it again! I’m an avid baker and experimenting with microwave cakes is something I’ve been trying out just for fun over the past few weeks. This is the best one yet!!

  20. Karl E says:

    Added a little raspberry jam to this – amazeballs has never seemed a more appropriate adjective!

  21. Maria says:

    This is by far the best mug cake recipe yet! I tried making them with other recipes, that included egg, but they turned out gross. I up the sugar a bit and cook for 45 sec to get a gooey, chocolaty and sweet mug of cake. My go to recipe to satisfy my sweet cravings!

  22. Yay! Mug cake, portion control, no egg, used almond milk and butter…what’s not to like! Thanks!

  23. Kev J. says:

    First, your blog has made it into my bookmark bar on my browser. I bet half of the views you’ve received since two weeks ago were from me :D

    Second, I tried this with the expectation that this would be /too/ simple and I would mess it up. But not so! I made a marshmallow sauce with chocolate, cinnamon, and nutmeg and subbed the peanut butter for that. I ate it, then made a mess. In my food pants.

    Thanks for the recipe! Keep up the good work!

  24. Elaine says:

    Oh, btw, the new website is absolutely beautiful! Congrats, Beth!

  25. Elaine says:

    OMG! This is the best mug cake recipe. So simple, I can make it during commercial break. lol! I’ve also tried some fun variations….a splash of vanilla in the mix, a spoonful of chocolate flavored pb in the center, or a mini candy bar in the center. Fabulous!

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