Do you know how much I love my microwave? I am team microwave! Keto Mug Cake is another one of my favorite 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, rich and chocolatey, and ready in under 5 minutes!
For this keto mug bread, you can make it chocolate or vanilla. All you need to do is omit the cocoa powder from the recipe for a vanilla version that is just as delicious!
You’ll also see in the recipe card below that I provide instructions for almond flour or coconut flour.
I’ve really grown to love coconut flour lately because it is so much more affordable than almond flour. I know some people do not like the taste of coconut flour, so almond flour instructions are provided!
I just love having these easy treat recipes in my back pocket to help me stay on track! You will also love my easy Butter Cookie Energy Bites. They are the most popular recipe on my site! I think everyone loves easy recipes!

This chocolate keto mug cake is another one of my favorite quick treats! I give instructions for vanilla and chocolate keto mug cakes...using coconut flour or almond flour!
- 1 Tablespoon Butter, melted
- 1 Tablespoon Coconut flour or 3 Tbsp Almond flour
- 2 Tablespoons Swerve (erythritol)
- 1 Tablespoons Cocoa powder
- 1/2 teaspoon Baking powder
- 1 Egg, beaten
- Splash of vanilla (for vanilla cake option)
- 1 Tablespoon Sugar free chocolate chips (optional for topping)
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In a coffee mug, melt the butter in the microwave for 10 seconds. Add the coconut flour, swerve, cocoa powder, baking powder, and beaten egg.
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Mix well. Microwave on high for 60 seconds, being sure not to overcook. If you overcook it, it will be dry.
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Top with a few chocolate chips if desired.
Macros for chocolate mug cake with coconut flour and no chocolate chips: 216 cal / 18g fat / 7.5 carbs / 4.5g fiber / 8.5g protein
- If you want to make this a vanilla cake, omit the cocoa powder and add the vanilla.
- To bake in the oven, Mix everything in an oven safe ramekin and put in a 350F oven for 10-15 minutes.
⭐ Did you make this Keto Mug Cake Recipe? Tag me on Instagram so I can see! @lowcarbwithjennifer
I made this a week ago with coconut flour, it was pretty good, but the coconut was “crunchy.” This time, tonight, I made it with PB flour. Everyone loved it! So good! The PB flour to almond flour ratio is 1:1, so just substitute the same amount of PB flour, as you would use almond flour.
What a great idea! Thanks for sharing!
What is PB flour? Would love to try it because I don’t love coconut flour. Thanks!!!
Peanut butter flour
It’s just dehydrated and ground peanuts. I used PB Fit in mine, which has a little added sugar, but is still less carbs than most natural PBs.
It was a sign! I had all the ingredients so I just made one! Oh wait, did I mention I like it so much I think Im going to make another!!
so glad you liked it!
WOW!!!
My hubby quite often does a low carb diet, but with a sweet tooth he struggles for dessert ideas. THIS IS PERFECT!!
Pinning and making REAL soon!
Low Carb is the best!
I made this last night … absolutely amazing !!! It has definitely made it into my favorite recipes book! Can you give us a nutritional count on this one though … I couldn’t find any values other than calories.
So glad you liked it, Susan. I have added the nutrition info to the post.
I made the keto cake yesterday! I loved it so much I made it again today! Thank you! I absolutely LOVE this recipe. ( I used coconut flour)
Yay! So glad you liked it!
I love your mug! Do you remember where you bought it?
It is Polish pottery that I bought in Germany. I have tried to find something similar with no luck!
OMGOSH!!! Just went on eBay and typed polish mug!!! A bunch to choose from!
PLEASE tell me you have a link for that gorgeous mug????!!!!! OH! And beautiful recipe!! Thank you! xoxo
Sorry, Marie! I wish I could find another one but it is Polish pottery I bought when we lived in Germany.
That’s ok!! Just went on eBay and typed Polish mug! There are quite a few that are similar!! Yay!! Ty!!
Can I use Splenda or Stevia instead for the sweetener? I have those on hand!
You definitely could but I’m not sure on the amount
I just made the vanilla version of this using coconut flour. Yowza it was extremely sweet. Is 2 tblsp of swerve a typo and supposed to be teaspoons instead? I’ve looked at the recipe over and over figuring my old eyes read it wrong. I will definitely make it again but I’m going to pare down the swerve for sure. 😊