No need to miss out on pumpkin season if you’re living the low-carb life. This keto pumpkin mug cake is the quick and easy answer to enjoying pumpkin cake without the major sugar rush.
For about 6.8g net carbs, this pumpkin spice mug cake is moist, filling, and delicious to eat in place of traditional pumpkin pastries and desserts.

Table of Contents
Make a Pumpkin Mug Cake Keto Friendly
To me, part of living a ketogenic lifestyle long term is finding low-carb replacements for the desserts I love. I used to live for sugary pumpkin goodies throughout the fall.
Now, I can still enjoy pumpkin treats in moderation using keto friendly ingredients. I also find that moderation is so much easier with high fat foods. Where I used to go back for seconds and thirds of a pumpkin cake, I am full and satisfied after one keto mug cake thanks to the fats.

Low-Carb Pumpkin Mug Cake Ingredients
(Exact measurements are in the recipe card below)
- Almond flour
- Coconut flour
- Erythritol
- Baking powder
- Pumpkin pie spice
- Melted butter
- Pumpkin purée: You want the can to say 100% pure pumpkin.
- Egg
Pumpkin Cake in a Mug Directions
In a microwave-safe mug, mix the almond flour, coconut flour, baking powder, erythritol, and pumpkin pie spice until well incorporated.

Add the melted butter, pumpkin purée, and egg and stir until smooth.

Cook in the microwave for 90 seconds or until the top is opaque and cooked through. It may take longer due to the density of pumpkin.

Top with whipped topping if you choose and serve right away.

Recipe Tips and FAQ
How long to microwave a pumpkin mug cake.
Pumpkin is very moist and dense, so cooking time might take longer depending on your microwave. Check it after 1 minute and 30 seconds, but it may require an extra 15 seconds or so.

Can I substitue the flour in this mug cake?
Normally, mug cakes are pretty forgiving and it’s easy to swap out the flours. With this pumpkin mug cake that’s not the case. Results may vary quite a bit if you make flour substitutions.

What can I add to my low-carb pumpkin cake?
If you like a little extra going on in your mug cake, here are some possible mix-ins:
- Coconut shreds – like in this Halloween Mug Cake
- Low-carb baking chips
- Walnuts
- Pecans
- Keto sprinkles
Be sure to factor in the net carbs of any mix-ins you add.
More Microwave Cakes to Try
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Please let me know if you try this keto pumpkin mug cake recipe!

Liz
Friday 26th of November 2021
I love making mug cakes! Perfect to fill that sweet tooth graving, without having to make a whole cake!
Jen Soltys
Monday 29th of November 2021
Definitely! If I make a whole cake, I eat a whole cake. :/ LOL Thank you! :)