One Minute Peanut Butter Cake
Picture this scene: it's 8:30 in the evening. The sky is just starting to get dark outside your living room window. You ate a delicious, healthy and veggie-filled dinner a few hours ago and now you are ready to sit down to the most recent episode of So You Think You Can Dance and dive into a decadent plate of dessert.
Oh wait, you have no dessert.
No chocolate, no cookies, no ice cream, no cake, no pie, not even a Jordan almond. What's a girl to do?
Well she's to go to her microwave.

You can make a delicious, fluffy, moist peanut butter cake in your microwave in about one minute (30 seconds mixing, 30 seconds zapping). It even has frosting (as any good cake does). This is portion control and convenience at their greatest.

The options are also pretty endless. Toss in a tablespoon of chocolate chips for a chocolatey and gooey kick (like I did) or a few peanuts for an earthy crunch. Or leave it plain for the quickest and easiest route to dessert o'clock.
📖 Recipe

One Minute Peanut Butter Cake
Ingredients
- 1 egg beaten
- 1 tablespoon brown sugar
- ½ teaspoon baking powder
- 1 heaping tablespoon flour
- 2 tablespoons peanut butter
- 1 teaspoon milk
- 1 tablespoon powdered sugar give or take
Instructions
- In a small bowl, whisk together egg, brown sugar, baking powder, peanut butter and flour.
- Pour batter into a greased ramekin. Microwave for 30 seconds.
- While the cake is microwaving, stir together milk and powdered sugar, adding more powdered sugar if necessary to thicken frosting.
- Remove cake from ramekin (or don't), pour frosting over top.
- Enjoy!

Oh my god. This cake just saved my life. Thank you thank you thank you.
To those of you thinking, "Yum, that sounds tasty. I should make that sometime..." Don't wait! Go to your kitchen NOW. SO GOOD!
YUMMY! So I found this 2 weeks before I started a low carb diet, yikes! You can bet I ate this a ton before then. After on the diet I was craving it and found a way to make it super friendly to my diet!
Just added 1 tbsp flax seed, switched flour for almond flour, and brown sugar for splenda, then instead of the icing topping i made my own whip cream with a bit of splenda and heavy cream. Yay!!!! Now i can have it again! Thanks for the awesome recipe! (Could go a step further with 'natural no sugar added p-butter' but i kept the good stuff! hehe)
Awesome Maggie! So glad you found some modification that work for you. 🙂
Found your recipe through Pinterest...I am addicted to this cake. So rich...awesome to eat and easy to make.
Thanks, Joy! So glad you like it. 🙂
This is incredible! && so perfect for me, as a college student who lives alone! I've been wanting to try a 'mug-cake' for a long time now, but the only ones I would come across were ones that called for cocoa powder, which I of course never have on hand. So this was a must try - & it turned out great! I also cooked it for longer, after 30 seconds I could turn the cup sideways & goo would come out the edges, so I micro'd 10 sec at a time until it looked like it was done, & it didn't dry out on me! Also, the chocolate chip addition is a MUST!
I made your Nutella version last night and it was good so hubby and I thought we'd try the peanut butter version. I totally made it wrong (added the powdered sugar and milk to the mix instead of as a frosting- oops) and it still came out so good! It was really moist and I didn't miss having a frosting. Thanks!
I just found this recipe in a dire time of need - when I blog about it tomorrow, I'm calling it a PMS cure! Thank you for sharing!
Also, I read through some of your other posts and I really like your blog! Congrats on the All About Numbers Challenge - I couldn't even begin to imagine accomplishing such a feat!
Ummmm holy crap. I am a peanut butter whore and am skeptical of "mug cakes" but this was amazing. Thanks for sharing!
what if you dont have baking powder can you use baking soda?
Nope, sorry! They are two totally different things. And the cake won't rise without it.
Cassie, I usually avoid blogs like these, but now I'm a believer. I'm a college junior who loves to cook, but I'm forced to do my best with, err, feeble resources. I made this as you wrote it and added some butterscotch chips. You are my new "celebrity" chef crush.
Keep on keepin' on.
HA! I definitely LOLed at both "celebrity" and "chef" which I am neither. 😀 I'm glad you liked it!
Hi,
which temperature for the microvawe?
Thanks
L.
I don't have temperatures on my microwave! But I microwaved it at 100% power. 😉
This recipe looks so delicious! My mouth is just watering over here...I will try the recipe as you have stated above but I am also anxious to try some of the other ideas that your users have as well!
Thanks,
Matti
i cannot decide if this was good discovery or a bad one...so easy and so delicious!
I'm eating it right now. I didn't have brown sugar, and read earlier that regular sugar could dry it out, so I only put 1 TSP sugar. I also tore up a tiny bit of marshmallow and added a little chocolate magic shell to sweeten it up. Turned out great at 45 seconds in my pathetic microwave. No glaze (no powdered sugar), but still great and REALLY rich!
thank you so much for sharing this really is what i needed !!! my uncle passed away earlier his week (third death in my family with in the year) i was stumbling and cam across this and decided that i needed this!!! it turned out amazing!!!
SO glad you liked it and it could make you feel better. Sorry about your losses. <3
So glad I stumbled on this!!!! There are so many nights that I am looking for something sweet to eat and I am not in the mood for baking! So this simple sweet will be great! Plus my I think my 3 year old will love it considering it has his 2 favorite loves, chocolate chips and peanut butter!
Just made it with my mom at 11:30 at night! its amazing ! ♥
Glad you guys liked it! 😀
this is, without a doubt, one of the most brilliant deserts ever! right after reading it, i jumped off the couch and made it to eat while i watched a movie! it was so delicious; in fact, i'm still eating it right now! amazing. thank you so much!
Yay! So glad you liked it. 🙂
Made this just now, and my thoughts:
It took my microwave about 1 whole minute to cook it, and I have a new microwave, but it still wasn't as long as a normal cake! I love the portion size. I made mine in a mug so it's bigger 🙂 And I added more powdered sugar/milk mix b/c I like mine gooier. I recommend it, definitely!! Thanks for a really great and quick recipe!
For anyone that is wondering... I put all the ingredients into a recipe calorie counter and it came up with about 374 calories per cake. Not bad if you share it with someone!!!
Thanks for the info!
We did this with strawberry icing and it was AMAZING.
That sounds awesome!
are those chocolate chips i see??? the brown spots are throwing me off....cant wait to try this one!!!