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    Home » Recipe Index » Low Carb Desserts

    Keto Mug Cake - Chocolate, Vanilla, or Peanut Butter

    by Jennifer Banz · Updated: May 5, 2026616 Comments
    4.87 from 451 votes
    Recipe Print Pin

    This chocolate keto mug cake in the microwave is another one of my favorite quick keto desserts! I give instructions for vanilla, chocolate, and peanut butter versions and you can make it with almond flour or coconut flour.  Keto chocolate mug cake is my favorite keto dessert recipe!

    keto mug cakes

    Do you know how much I love my microwave?  I am team microwave!  Keto Mug Cake is another one of my favorite keto dessert recipes using that trusty machine!

    My 90 second Low Carb Bread is another one of my microwave recipes.  So good for sandwiches!

    This keto mug cake is so easy to make with only 6 ingredients.

    It's also easy and ready in under 5 minutes!

    For this keto mug cake, you can make it peanut butter, chocolate, or vanilla.

    Chocolate Keto Mug Cake

    For a keto chocolate mug cake, in a microwave safe coffee mug, melt the butter in the microwave for 10 seconds.  Add the coconut flour or almond flour, sweetener, cocoa powder, baking powder, vanilla and beaten egg.  Mix well.
    To make this keto chocolate dessert, microwave on high for 60 seconds, being sure not to overcook.  If you overcook it, it will be dry. Top with sugar free chocolate chips of desired.
    How to make a bulk mix

    You can scale this up however you want. For example:

    10 servings:

    • 30 tablespoon almond flour (1 ⅞ cups)
    • 10 tablespoon cocoa powder (just over ½ cup)
    • 20 tablespoon sweetener (1 ¼ cups)
    • 5 teaspoon baking powder

    Mix it really well and store in a jar.

    How much to use per mug cake

    Each time you want one, just scoop:

    • 6 tablespoons of the dry mix

    That scoop already includes the right ratio of everything, including the baking powder.

    One small tip

    Because baking powder can settle, give the jar a quick shake or stir before scooping, especially after it's been sitting a few days.

    Peanut Butter

    In a microwave safe coffee mug, melt the butter in the microwave for 10 seconds.  Swirl around the inside of the mug or ramekin.
    melted butter in a ramekin
    Add the coconut flour or almond flour, sweetener, baking powder, vanilla and beaten egg.  Mix well. Swirl in the peanut butter.
    Microwave on high for 60 seconds, being sure not to overcook.  If you overcook it, it will be dry. Top with sugar free chocolate chips if desired (highly recommend to make this keto dessert over the top).

    Vanilla

    In a microwave safe coffee mug, melt the butter in the microwave for 10 seconds.  Add the coconut flour or almond flour, sweetener, baking powder, vanilla and beaten egg.  Mix well.
    Microwave on high for 60 seconds, being sure not to overcook.  If you overcook it, it will be dry. Top with sugar free chocolate chips of desired or mix in before cooking.

    Toppings

    I like to top these keto mug cakes with sugar free chocolate chips, sugar free chocolate syrup, or whipped cream.

    pouring chocolate syrup on a vanilla mug cake

    I just love having these easy keto dessert recipes in my back pocket to help me stay on track!  You will also love my easy keto peanut butter cups and Butter Cookie Energy Bites.

    Have this keto mug cake with some Keto Coffee!

    Recipe Card

    KETO MUG CAKE IN A COLORFUL POLISH POTTERY MUG

    Keto Mug Cake - Chocolate, Vanilla, or Peanut Butter

    Author: Jennifer Banz
    4.9 from 451 votes
    Rate Print SaveSaved! Pin
    Prep 4 minutes mins
    Cook 1 minute min
    Total 5 minutes mins
    This chocolate keto mug cake is another one of my favorite quick keto dessert recipes! I give instructions for vanilla, chocolate and peanut butter...using coconut flour or almond flour!
    Servings 1
    Course Dessert
    Cuisine American

    Ingredients

    • 1 Tablespoon Butter, melted
    • 1 Tablespoon Coconut flour or 3 tablespoon Almond flour (click to see my favorite)
    • 2 Tablespoons sugar free granulated sweetener (click to see my favorite)
    • 1 Tablespoons Cocoa powder (For Chocolate Version)
    • 1 Tablespoon Sugar free Peanut butter (For Peanut Butter Version)
    • ½ teaspoon Baking powder
    • 1 Egg, beaten
    • Splash of vanilla
    • 1 Tablespoon Sugar free Chocolate Chips

    Method

    For Chocolate
    1. In a microwave safe coffee mug, melt the butter in the microwave for 10 seconds.  Add the coconut flour or almond flour, sweetener, cocoa powder, baking powder, vanilla and beaten egg.  Mix well.  Microwave on high for 60 seconds, being sure not to overcook.  If you overcook it, it will be dry. Top with sugar free chocolate chips of desired.
    For Vanilla
    1. In a microwave safe coffee mug, melt the butter in the microwave for 10 seconds.  Add the coconut flour or almond flour, sweetener, baking powder, vanilla and beaten egg.  Mix well.  Microwave on high for 60 seconds, being sure not to overcook.  If you overcook it, it will be dry. Top with sugar free chocolate chips of desired or mix in before cooking.
    For Peanut Butter
    1. In a microwave safe coffee mug, melt the butter in the microwave for 10 seconds.  Add the coconut flour or almond flour, sweetener, baking powder, vanilla and beaten egg.  Mix well. Swirl in the peanut butter.  Microwave on high for 60 seconds, being sure not to overcook.  If you overcook it, it will be dry. Top with sugar free chocolate chips of desired.

    Notes

    Nutrition for chocolate mug cake with almond flour and no chocolate chips: 312 cal / 28g fat / 7 carbs / 4g fiber / 12g protein
    Nutrition for peanut butter with almond flour and no chocolate chips: 395 cal / 35g fat / 8 carbs / 4g fiber / 15g protein
    Nutrition for Vanilla with almond flour and no chocolate chips: 303 cal / 28g fat / 5 carbs / 2g fiber / 11g protein
    • Baking Instructions: Use an oven safe ramekin.  Bake in the oven at 350 for 15-20 minutes.

    Did you make this recipe?

    Leave a comment or rating below!

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      Recipe Reviews




    1. Cristy says

      February 15, 2021 at 2:35 pm

      5 stars
      Best ever! I used Hershey’s special dark cocoa (100%) and made my own clarified butter topped it with 4 raw pecans and it was fantastic! Looked like a dark devil’s food cake and 2 T of erythritol was not too sweet for me! Now if I could only get my diabetic brother to try it!

      Reply
    2. Margaret says

      February 12, 2021 at 9:12 am

      I've made these and they are delicious, but I found that 2 tablespoons sweetener was way too much. I only use 1 tablespoon and they are plenty sweet enough without the extra carbs and aftertaste.

      Reply
    3. su says

      February 05, 2021 at 2:35 pm

      5 stars
      best mug cake(s) recipe. hands down!!

      Reply
    4. Pat says

      January 31, 2021 at 8:46 pm

      5 stars
      Made the chocolate one with milk chocolate Lilly's chips. Very good will make again!!

      Reply
    5. Cindy Mac says

      January 29, 2021 at 10:44 am

      5 stars
      Enjoyed the taste. I did not use a lot of sweetener and the result was a muffin like cake in a mug. Also the taste was not super rich chocolate. If you’re looking for a super chocolatey cake use more cocoa. Yum!

      Reply
    6. Laura says

      January 27, 2021 at 11:10 pm

      5 stars
      Made one chocolate and one peanut butter with chocolate chips. Had a little cold coffee so added one tablespoon to the chocolate! Yum!!! My husband wouldn’t share his peanut butter one haha. Total fan of these super easy treats??

      Reply
    7. erin stickle says

      January 26, 2021 at 6:34 pm

      5 stars
      Excellent! I put 1/2 tsp espresso powder in the vanilla recipe, added some whipped cream and had “tiramisu”! Yum!

      Reply
    8. erin stickle says

      January 26, 2021 at 6:31 pm

      5 stars
      It was very good! I added a half tsp espresso powder to the vanilla recipe with some whipped cream and had some “tiramisu”!

      Reply
    9. liz says

      January 26, 2021 at 9:29 am

      5 stars
      I also forgot the 5 stars!

      Reply
    10. liz says

      January 26, 2021 at 9:25 am

      OMG these are the best, I tried lots of different recipes last time I low carbed. None of them were as good as these. Well done and Thank you!

      Reply
    11. Ellie Y says

      January 25, 2021 at 11:55 pm

      5 stars
      Amazing! Added a few macnut pieces. Outstanding,! Thanks for sharing!

      Reply
      • Carmen says

        February 27, 2021 at 10:49 pm

        5 stars
        Sorry...forgot the 5 stars!!!

        Reply
    12. Kirsten says

      January 21, 2021 at 10:57 pm

      5 stars
      First off let me start by saying that my husband hates cake (would rather eat pie) — were new to keto and were both craving something sweet tonight .. so I made myself a chocolate cake and my husband the peanut butter cake. He devoured it and so did I! Both were AMAZING and DELICIOUS and we are excited to be able to indulge every now and then and not feel super guilty about it!

      Reply
    13. Val Wall says

      January 21, 2021 at 4:51 pm

      Delicious! Thanks for posting!

      Reply
    14. Ann says

      January 19, 2021 at 5:54 pm

      Just curious ......is it really 1 T of coconut flour OR 3 T of almond flour?

      Reply
      • jenniferbanz says

        January 22, 2021 at 12:07 pm

        yes

        Reply
      • Dana says

        January 27, 2021 at 3:34 pm

        5 stars
        Yes, coconut absorbs moisture so you need MUCH less!! Trust it!! 🙂

        Reply
    15. Kathy says

      January 16, 2021 at 7:19 pm

      5 stars
      One of my hubby’s favorites of all time! So easy to make too. I top it with a square of 90% chocolate, peanut butter and a sprinkle of cacao nibs. He loves it!

      Reply
    16. Susan says

      January 16, 2021 at 11:13 am

      5 stars
      Excellent mug cake recipe! Thank you so much!

      Reply
    17. Keto Hypnotist says

      January 14, 2021 at 10:40 pm

      5 stars
      Wonderful recipe! I added walnuts and wow these were good.

      Reply
    18. Miranda says

      January 14, 2021 at 8:49 pm

      5 stars
      I have made a TON of different keto mug cakes - this one is by far the ABSOLUTE BEST!!! I made a double batch in a larger dish, planning on saving it, and my kids devoured it after their tiny test bites! Yum!!!

      Reply
    19. Ann says

      January 14, 2021 at 8:22 am

      Just made the vanilla variation for a sweet fix after lunch. It was perfect, many thanks!

      Reply
    20. Jennifer says

      January 12, 2021 at 2:45 pm

      5 stars
      Just amazing! I put a naughty twist on this and made cuts in the sponge, then poured a tiny bit of Bailey’s Almande and put a few raspberries and a dash of single cream as I saved up my macros! Yum yum yum. Thank you Jennifer

      Reply
    21. Felicia says

      January 08, 2021 at 7:15 pm

      5 stars
      Love the chocolate! Next up is PB!

      Reply
    22. Jenny says

      January 08, 2021 at 2:09 pm

      5 stars
      Love this recipe. I've also added lemon and salted caramel flavouring to them. Haven't had a bad one yet. So quick and easy for a sweet fix

      Reply
    23. Sunny Dawn says

      January 07, 2021 at 1:13 pm

      5 stars
      just finished off the chocolate mug .... super great! and moist and tastey and sooo easy to make .. no fuss no mess .. thank you for a great recipe! i'll be trying the 2 other flavors soon

      Reply
    24. Elisa says

      January 06, 2021 at 7:58 pm

      This was delicious!! I’ll definitely be premixing packets of the dry ingredients for this. Thanks for the awesome recipe!

      Reply
    25. Melissa says

      December 23, 2020 at 10:08 am

      Have you tried a full cake version of the chocolate peanut butter? The mug is amazing, I want to make a larger cake, but a little lost on how to convert.

      Reply
      • jenniferbanz says

        December 28, 2020 at 1:56 pm

        I sure haven't but that sounds amazing!

        Reply
    26. Jillerie says

      December 21, 2020 at 12:35 am

      I added cream cheese. 2 tbsp cream cheese, heat for 20 seconds in the microwave, mix in 1/2 tsp Truvia (sweetener). Once mug cake is fully blended, drop by spoonful into batter, then swirl one time. Microwave for 1 min, 20 seconds.

      Reply
    27. Soula says

      December 18, 2020 at 5:03 am

      5 stars
      Forgot to add 5 ? Oops ?

      Reply
    28. Soula says

      December 18, 2020 at 5:02 am

      Great recipe.
      Tried it with maple syrup instead of sweetener
      Worked a treat
      I'm paleo so I've swapped all sweetners for coconut sugar and maple syrup.
      I only needed 1tb as I don't like sweet things anymore.
      Don't even eat chocolate chocolate anymore either.
      Thank you for this awesome yummy recipe.
      I accidently added 1tb of tahini in the chocolate mug cake recipe and tasted really good too haha
      G'Day from Australia

      Reply
    29. Cherie De Sues says

      December 14, 2020 at 11:10 pm

      5 stars
      WoW! Love the chocolate mug cake and it was so easy to make. I added a tablespoon of Lily no sugar dark chocolate chips and I'm eating it now. Matter of fact, I'm going back to it...

      Reply
      • Janelle A says

        December 19, 2020 at 11:49 pm

        5 stars
        One of the best mug cake recipes I’ve had!
        I’m usually keto but currently pregnant, but I still love baking with stevia.
        I made the peanut butter version, and added in some banana
        Super moist! Me ( and baby) are fans !

        Reply
    30. Maureen says

      December 12, 2020 at 12:07 pm

      This is a great recipe. Made the Peanut Butter version. Delicious!

      Reply
    31. Brenda says

      December 01, 2020 at 8:57 pm

      Good for a quick fix! Next time I'll use monkfruit instead of Splenda and microwave for 55 seconds as mine was a bit dry, as you warned. Nice dessert, or breakfast!

      Reply
    32. Marcy says

      November 26, 2020 at 4:35 am

      5 stars
      I made the chocolate version. Best ever!!

      Reply
    33. Gina says

      November 24, 2020 at 8:16 pm

      5 stars
      Wow - this is delicious. I used coconut flour; was out of baking powder, so subbed a tsp of "2 Good" Yogurt, and added both the chocolate and sugar-free crunchy peanut butter. Topped with a few of the sugar-free chocolate chips. Awesome yumminess - thanks for the recipe!!

      Reply
    34. Zubi says

      November 19, 2020 at 7:13 am

      5 stars
      Ohh my God!!

      Thank you so much for great recipe ?? l am in heaven now ?
      I just tried the chocolate mug cake and it was no different then a real cake. I added 5 raspberries before cooking in the microwave and and it was kore delicious with sourness of raspberries.

      I can’t wait to try others ?

      Reply
    35. Lauren says

      November 17, 2020 at 7:03 pm

      5 stars
      Used coconut flour and maple syrup and it turned out absolutely delicious!! I added frozen triple berries and heavy whipping cream on top to make it a match made in heaven?

      Reply
    36. Nina says

      November 17, 2020 at 5:17 pm

      This is soooooo goood! So happy I found your recipe!!! For the chocolate cake version - is it 7g carbs minus the 4g fiber so it's 3.5 net carbs total?

      Reply
      • jenniferbanz says

        November 21, 2020 at 9:32 am

        yes

        Reply
    37. Brenda says

      November 16, 2020 at 4:41 am

      Jennifer I am so happy I found you. Your recipes are really good?

      Reply
    38. Lisa says

      November 12, 2020 at 1:29 pm

      I made this and the batter looked VERY thick... I added a tablespoon of almond milk... it tasted okay but not sure why it seemed rather dense. I used it as a trifle cake, layered with HWC and fresh raspberries, so it was still quite tasty. Served in stemmed wine glasses for effect.

      Any idea why it came out so dense? I made the vanilla version.

      Reply
    39. Tasha says

      November 09, 2020 at 10:11 pm

      5 stars
      Ooh, this is so good. Thank you! I put a sugar free chocolate coconut candy in my mom's and topped it with whipped cream and sugar free chocolate syrup.

      Reply
    40. Morgan says

      November 09, 2020 at 7:52 pm

      5 stars
      I have tried SO many mug cakes and this is by far the best! I made the chocolate one using almond flour and it is rich and decadent while remaining moist. Thank you!!

      Reply
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