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Boulder Locavore®

Easy Gluten-Free. Seasonal Recipes. Travel.

LAST UPDATED: • FIRST PUBLISHED: By Toni Dash - 54 Comments

Peanut Butter Chocolate Mug Cake recipe

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Peanut Butter Lovers Chocolate Chip Mug Cake. Rich, flourless peanut butter cake for one with chocolate chips. Ready in 1 minute in the microwave! - BoulderLocavore.com

Mug Cake is a fast, fun dessert for one. This Peanut Butter Chocolate Mug Cake recipe is ready in 1 minute with rich flavors you’ll love.

Peanut Butter Chocolate Mug Cake recipe title image

Do you ever find yourself at home after dinner or after work (or school) feeling like you wished you had just a little something sweet?

You don’t have anything that will fill the craving in your kitchen and you don’t want it badly enough to go to the store?

If you are a peanut butter lover I have a solution for you: Peanut Butter Chocolate Mug Cake recipe.

It cooks in 1 minute in the microwave and is flourless (so naturally gluten-free)!

What is a Mug Cake?

As the name suggests, a mug cake is a miniature cake cooked in a coffee mug in the microwave!

It’s a perfect serving for one! It’s fast and easy to make too.

Mug cake recipe in white mug

Why Make this Mug Cake recipe?

We must have made this a hundred times and enjoy it every time.

Why make THIS mug cake recipe?

  • It’s easy
  • Made with ingredients you probably have on hand
  • Only four ingredients
  • No flour
  • Has a wonderful rich peanut butter and chocolate flavor
  • Is ready in one minute; perfect for a dessert craving
  • It’s a delicious recipe!

Ingredients in this Microwave Mug Cake recipe

Only four simple ingredients are needed to make this rich, delicious little mug cake:

  • Peanut Butter
  • 1 Egg
  • Granulated Sugar
  • Chocolate Chips

Peanut Butter and Chocolate mug cake recipe

No Flour Mug Cake

When I first began experimenting to make a successful, good tasting mug cake, most had flour.

My research indicated gluten-free flour mug cakes weren’t usually successful.

This version does not contain flour at all. Perfect for those gluten-free or just avoiding flour!

Chef’s Notes for Making this Mug Cake recipe

I’ve learned some things over the years of making this mug cake that I’ll share:

  • Results will vary depending on the mug used; both the mug size and the material.
  • The mug in the photos is an 8-ounce (liquid/volume) mug. Each time the cake inflates and settles to a round top over the top of the mug.
  • The mug in the video is also an 8-ounce mug but a heavy, thick diner mug. The cake settled a bit below the rim.
  • The mug cake can be made in any size mug.
  • Different microwaves can impact how much the cake rises.

Mug cake with peanut butter and chocolate flavors

Cooking the Mug Cake

When the mug cake cooks in the microwave, it will rise up much taller than the mug rim.

You’ll think it’s going to explode but it doesn’t!

The rising peaks as the cooking concludes.

As the mug cake cools it will deflate and settle back into the mug for a denser cake as shown in the photos.

How to Make Peanut Butter Chocolate Mug Cake recipe – Step by Step

  • In a small mixing bowl whisk together with a fork: egg, peanut butter and sugar.
  • Stir in the chocolate chips.
  • Spoon into a microwave safe mug.
  • Microwave on high for 1 minute!
  • Allow to cool slightly before eating.

Peanut Butter Lovers Chocolate Chip Mug Cake. Rich, flourless peanut butter cake for one with chocolate chips. Ready in 1 minute in the microwave! - BoulderLocavore.com

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Peanut Butter Lovers Chocolate Chip Mug Cake. Rich, flourless peanut butter cake for one with chocolate chips. Ready in 1 minute in the microwave! - BoulderLocavore.com
5 from 23 votes
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Peanut Butter Chocolate Mug Cake recipe

You've never prepared an easier dessert! A quick stir and it cooks into a cakey confection in 1 minute of microwaving! The mug will be hot so handle carefully.
Course Dessert
Cuisine American
Keyword mug cake, peanut butter chocolate mug cake
Prep Time 3 minutes
Cook Time 1 minute
Total Time 5 minutes
Servings 1 mug cake
Calories 511 kcal
Author Toni Dash

Ingredients

  • 1 Egg , whisked to completely blend
  • 3 tablespoons Smooth Peanut Butter
  • 1 tablespoon plus 1 teaspoon Granulated Sugar
  • 1 1/2 tablespoons Dark Chocolate Chips

Instructions

  1. In a small mixing bowl combine the whisked egg, peanut butter and sugar. Using a fork, mix the ingredients to fully combine. 

  2. Stir in the chocolate chips.

  3. Spoon the batter into a 8-ounce (volume/liquid) mug or larger. 

  4. Place in the microwave and cook on high for 1 minute. Allow to cool slightly before eating. Note: the mug will be very hot, take care when handling it.

Recipe Video

Nutrition Facts
Peanut Butter Chocolate Mug Cake recipe
Amount Per Serving
Calories 511 Calories from Fat 261
% Daily Value*
Total Fat 29g 45%
Saturated Fat 11g 55%
Cholesterol 163mg 54%
Sodium 378mg 16%
Potassium 564mg 16%
Total Carbohydrates 44g 15%
Dietary Fiber 3g 12%
Sugars 24g
Protein 21g 42%
Vitamin A 4.8%
Calcium 11.2%
Iron 11.6%
* Percent Daily Values are based on a 2000 calorie diet.

Originally published: August 28, 2016

ABOUT THE AUTHOR

TONI DASH

Toni Dash, is the writer/blogger, photographer, recipe developer and creator of Boulder Locavore®. She has been developing easy to make, well-tested recipes since 2010. Her seasonal recipes bring excitement to the dining table for both gluten-free and gluten diners. Toni has been featured in numerous publications and on culinary websites for her creative, delicious recipes and travel features. For more details, check out her About page.

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Reader Interactions

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  12. Meghna says

    April 25, 2019 at 8:10 am


    Hey Toni, it’s one spectacular blog that you have, I visit frequently to find recipes here and this mug cake is just so apt for my crazy busy schedule!

    Reply

  14. Patty says

    April 25, 2019 at 8:01 am


    When in a hurry, and it’s often the case, your mug cake recipe is the one I go to, so fast and easy, delicious too!

    Reply

  18. Linn says

    April 2, 2017 at 3:33 pm


    I am seriously going to double the recipe and put it in a mini silicon doughnut pan, then top with glaze before serving… I think this would be a fabulous breakfast donut!

    Reply

      • Linn says

        April 7, 2017 at 10:05 am


        FANTASTIC!!!!
        I doubled everything except the egg and added half a banana and cinnamon. Topped it with a simple glaze, also with cinnamon, and my husband went crazy! Plus knowing that they’re healthy…????????

      • Toni Dash says

        April 7, 2017 at 11:34 am

        That sounds SO good Linn! I love knowing this and thank you for leaving your comment!

    • Toni Dash says

      December 18, 2016 at 5:07 pm

      That is the amount I’ve used and have found to work well. Another reader just left a comment about using a sugar substitute that worked great for her. Maybe try some experimenting? The sugar affects both taste and structure of the mug cake.

      Reply

  21. Jan Lewis says

    December 17, 2016 at 12:25 pm


    Oh. My. God! This is awesome! I subbed Swerve granulated and used Lily’s sugar free chocolate chips. So it’s low carb and yummy! I will definitely be making this again! Thank you!

    Reply

    • Toni Dash says

      December 18, 2016 at 12:18 pm

      Your comment makes me so happy Jan! I am thrilled you loved it so much AND that you could adapt to meet your needs. Thank you for letting me know it worked out for you!

      Reply
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