Peanut Butter Cookie Mug Cake

Peanut Butter Cookie Mug Cake – This cookie in a mug takes just a few minutes and tastes just like a peanut butter cookie! Perfect for when you just want a single serving of a dessert!

Peanut Butter Cookie Mug Cake

Peanut Butter Cookie Mug Cake

I’m in love with mug cakes! They are seriously the greatest thing ever because I love desserts but usually don’t want a whole batch of cookies or an entire cake, I’d never get through it all.  A cookie in a mug is just one serving of perfection!

After making the Snickerdoodle Mug Cake a few weeks back, I knew I had to try one experimenting with other flavors.  I started with a peanut butter mug cake because peanut butter is so good! It worked out really quite well! Along with this one, there are at least two more mug cakes coming the next few weeks.  I might be a tad bit addicted to making them for lunch!

I’ve been addicted to peanut butter for years, I put it on literally everything from waffles to oatmeal to apparently wonderful  mug cakes now and sometimes I even grab a spoonful of peanut butter sometimes as a snack! Peanut butter and jam sandwiches are my lunches for school everyday too! I’m not sure what it is about peanut butter, but it is delicious!

Peanut Butter Mug Cake

Can’t get enough of this peanut butter cookie mug cake recipe? Try these other recipes!

Peanut Butter Cookie in a Mug

Yield: 1 servings

Peanut Butter Cookie Mug Cake

Peanut Butter Cookie Mug Cake

Peanut Butter Cookie Mug Cake - This cookie in a mug takes just a few minutes and tastes just like a peanut butter cookie! Perfect for when you just want a single serving of a dessert!

Prep Time 2 minutes
Cook Time 2 minutes
Total Time 4 minutes


  • 1/4 cup all-purpose flour
  • 1 tbsp brown sugar
  • 1/4 tsp baking powder
  • 1/4 tsp cinnamon
  • 1/2 tsp vanilla extract
  • 1/4 cup milk
  • 1 tbsp butter, melted
  • 3 tbsp peanut butter


  1. In a small bowl, combine flour, brown sugar, baking powder, and cinnamon.
  2. Combine in vanilla, milk, peanut butter, and melted butter. Stir until combined with no lumps.
  3. Pour batter into mug and microwave for 1-1:30 minutes.

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Peanut Butter Cookie Mug Cake – This mug cake takes just a few minutes and tastes just like a peanut butter cookie! Perfect for when you just want a single serving of a dessert! Mug Cake Recipe | Peanut Butter Mug Cake | Mug Cookie #cake #mugcake #cookie #dessert #easyrecipe #recipe

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  • Reply
    Laura @ Family Spice
    April 25, 2017 at 5:09 pm

    Ooh what a great idea for a mug cake!

  • Reply
    Lane & Holly @ With Two Spoons
    April 26, 2017 at 4:04 pm

    Yum! This looks amazing!

  • Reply
    Megan @ MegUnprocessed
    April 27, 2017 at 2:23 am

    Love mug cakes! Quick recipe for that “i want cake” moments!

  • Reply
    Baker by Nature
    April 27, 2017 at 2:53 pm

    This looks irresistible!

  • Reply
    May 16, 2017 at 9:40 pm

    I made this last night and it was perfect!! I’m back again now for round two ??

    • Reply
      May 16, 2017 at 11:33 pm

      Great! I’m so glad you enjoyed it! Mug cakes are literally my favorite!

  • Reply
    Lyndsay @ Lyndsay's Travel Kitchen
    June 9, 2017 at 10:08 am

    I love making mug cakes! They make great midnight snacks 😛

  • Reply
    September 24, 2017 at 7:24 pm

    Now I’m all about chocolate normally, but I was really craving some peanut butter cookies last week, so the idea for this mug cake was born.

  • Reply
    November 7, 2017 at 1:24 am

    Just can out of the microwave, I added some chocolate chips to the mix too ????? it’s literally heaven ??
    Very filling too

    • Reply
      November 8, 2017 at 1:22 pm

      Adding chocolate chips is such an awesome idea! So glad you enjoyed!

  • Reply
    November 24, 2017 at 10:49 pm

    I usually make a chocolate chip cookie in a cup but I’m out of chocolate chips so I decided to go with the next best thing!
    AND IT’S SO GOOD it’s so soft and gooey and peanut buttery. Thank you so much for this recipe!!

    • Reply
      December 5, 2017 at 5:35 pm

      So glad you enjoyed!

  • Reply
    January 24, 2018 at 6:22 pm

    any excuse for a cookie is a good excuse for me! YUM

  • Reply
    Rebecca Hubbell
    January 24, 2018 at 8:22 pm

    I love peanut butter cookies and cake, so this is going to be the perfect dessert for tonight!

  • Reply
    Monica Le
    March 21, 2018 at 9:39 pm

    oh this cookie looks so delicious..

  • Reply
    March 22, 2018 at 12:14 pm

    oooh! I have everything required to make this super quick recipe and I am making it for dinner tonight!
    glad I came across this one 🙂 and thanks for sharing!

  • Reply
    March 22, 2018 at 12:20 pm

    Mmmmn this looks super delicious. I love peanut butter cookies. I bet this is so great just out of the microwave.

  • Reply
    dixya @food, pleasure, and health
    March 23, 2018 at 11:39 pm

    i keep seeing mug cakes but i have yet to try it. PB is one of my fav flavors so this might just be the one to start with.

  • Reply
    March 24, 2018 at 4:58 am

    Peanut butter cake, can’t get better than this. Yumm! Plus a real treat for one is even better! Genius!

  • Reply
    Anne Lawton
    March 24, 2018 at 6:03 pm

    I’ve never tried mug cakes, but they are a great idea for a quick and easy dessert. I love that you can make them so quickly!

  • Reply
    Carly Patrick
    March 24, 2018 at 7:15 pm

    This was AMAZING. I ommited butter as I’m vegan and still came out perfectly ???? I recommend drizzling a bit of maple syrup on top too. SO YUMMY

  • Reply
    Ashley @ Big Flavors from a Tiny Kitchen
    March 25, 2018 at 3:17 pm

    Personal-sized desserts are so much fun! I love peanut butter cookies, but a mug cake is a fabulous idea! Perfect for when a sweet tooth craving strikes!

  • Reply
    Leslie Haasch
    March 25, 2018 at 3:54 pm

    I’m always so wary of mug cake recipes, but this looks too good to pass up!

  • Reply
    March 25, 2018 at 5:32 pm

    I love peanut butter cookies…I would need to make this into a bowl cake so I could eat even more 🙂 I do love personal-sized desserts, so you can exercise some kind of self-control though. Pinning this one for sure

  • Reply
    March 25, 2018 at 9:14 pm

    Oh – Just Enough peanut butter cookie/cake! Sounds perfect. I never wanted too much around, so this is great.

  • Reply
    March 25, 2018 at 9:38 pm

    How cool is that! Honestly I am not a big peanut butter lover (probably because i grow up in different country), but my kids and husband will love it

  • Reply
    Jenni LeBaron
    March 25, 2018 at 11:41 pm

    Yum, I love a cook mug cake. Especially when it’s chock full of peanut butter!

  • Reply
    March 26, 2018 at 4:10 pm

    This cake is the perfect hygge companion especially since spring weather has forgotten to show up yet.

    • Reply
      March 27, 2018 at 3:59 pm

      It really is!

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