Easy Keto Chocolate Mug Cake! With just seconds of cook time and a few ingredients, you can have a fudgy, chocolatey mug cake made from start to finish.
It's perfect for when those occasional emergency chocolate cravings hit, and only has 4 grams of net carbs.
Another great recipe to quickly curb your cravings is our keto hot chocolate mix. Within in a few minutes, you can be enjoying some creamy hot cocoa.
This cake is gluten-free, sugar-free too and uses a handful of ingredients and is made with a couple of simple steps.
Do you enjoy making fun keto desserts? You might like keto chocolate fudge and keto brownies.
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Why you'll love this recipe
Beginning a low-carb lifestyle can take some adjustment when you have a sweet tooth, but the good news is that you can still have a sweet treat every now and then.
A low-carb chocolate mug cake is a satisfying solution, thanks to its soft and fudgy texture and decadent rich chocolate flavor.
It's made with keto approved ingredients like almond flour and coconut flour, so you can feel satisfied knowing you made a nutritious choice, that won't ruin your keto diet.
Mixing butter and egg into the batter gives this chocolate keto mug cake a fluffy texture. If you need to be mindful of dairy, you can make this dairy-free too.
Top with a dollop of whipped cream, a drizzle of sugar free chocolate sauce, nuts, berries or some sugar-free chocolate chips sprinkled on top are tasty garnishes.
Key ingredients
Butter - We love using melted butter in keto cakes and it helps keep this super tender. It adds healthy fats and flavor. You can use oil if you like, but we recommend sticking with the butter.
Sweetener - Lakanto Monk fruit Sweetener and Swerve are two of our favorite keto granulated sweeteners. We haven't tried liquid stevia in this recipe yet, but if we do we will update this post.
Egg - Egg not only helps with the fluffy texture, it adds a touch of protein and fat to this recipe.
Vanilla - Even though this is a chocolate cake we like to add a touch of vanilla. It adds depth and flavor. You can always switch up the extracts to play with the flavors, if you like.
Almond Flour - We love baking and cooking with almond flour. It adds body, texture, flavor, protein, and fat. For another dessert made with almond flour, try our keto carrot cake bars.
Coconut Flour - A touch of coconut flour adds to the texture without adding too much of a coconut flavor.
Unsweetened Cocoa Powder - To take this recipe to the next level and give it it's rich chocolate profile.
Baking Powder - A little leavening agent goes a long way in helping this rise.
Have a question about the ingredients in this recipe? Please leave it in the comments below and we will get back to you.
You can make your own sugar-free chocolate chips and sprinkle on top or melt them and pour melted chocolate over the top of your keto mug cake.
Substitutions
You can turn this keto mug cake into a dairy free dessert by switching out the butter for another vegan/dairy free butter of your choice.
You could also try coconut oil, but keep in mind that it may change the texture slightly.
Looking for another dairy-free dessert, give our vegan avocado chocolate pudding a try.
Variations to try
Chopped Nuts - Walnuts, almonds or pecans. You can stir chopped nuts into your batter.
Berries - Keto-friendly fruits like raspberries, strawberries, blackberries and blueberries. We love to top our no bake keto cheesecake with berries also.
How to make a keto chocolate mug cake
Step 1: Place butter and sweetener in a large microwave-safe mug (10-14 oz.) or ramekin. Heat in the microwave until butter is melted, approximately 30 seconds.
Step 2: Add the egg and vanilla, and stir until combined.
Step 3: Add the almond flour, coconut flour, cocoa powder, and baking powder. Stir until combined and no lumps remain.
Step 4: Microwave for 40-60 seconds or until risen and firm on the top.
Serve warm with keto ice cream, sugar free whipped cream, or your favorite keto frosting.
You can find the printable recipe card below with the full ingredients and steps.
Expert tips
Use a large mug and don't fill it more than half to ⅔ full. You'll avoid a mess and a cake that doesn't set in the middle. You can make two servings by splitting your batter into two ramekins or mugs.
Always start with the lowest necessary cooking time. You can add a few seconds at a time if needed until your cake is firm in the center, but don't go over one minute.
If you have any questions, please leave a comment below.
Looking for other mug cake recipes? Try this keto pumpkin mug cake next.
FAQs
Mug Cakes can become rubbery if they are overcooked, so that's why we suggest starting with the lowest necessary cook time.
Using oil instead of butter may also lead to a rubbery texture
Yes, you do not 'need' the vanilla extract but it adds a depth of flavor to your keto mug cake.
Yes, you can bake this cake in the oven. You'll want to use a ramekin and bake it at 350 degrees F, for about 10 minutes. Make sure to check it for doneness throughout, so it bakes up exactly the way you want it.
Storage instructions
Not exactly sure how it's possible to have any leftovers, but if you do. Simply cover the mug and leave on the counter for the rest of the day. If you manage to not be tempted to finish it, you can then place it in the fridge for 2 to 3 days.
You can reheat your in the microwave. Simple put a small piece of butter on top and microwave for 10 seconds. The butter will stop the cake from drying out.
It can also be stored in the freezer. Ensure it is wrapped tightly with plastic wrap before placing in the freezer. Defrost in the fridge before reheating.
More Keto Chocolate Desserts:
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Did you make this recipe? Please come back and leave us a comment telling us what you thought.
📖 Recipe
Keto Chocolate Mug Cake
Ingredients
- 2 tablespoons butter
- 2 tablespoons sugar-free sweetener we used Swerve or Lakanto
- 1 large egg
- ¼ teaspoon vanilla extract
- 2 tablespoons almond flour
- 1 teaspoon coconut flour
- 2 tablespoons unsweetened cocoa powder
- ¼ teaspoon baking powder
Instructions
- Place butter and sweetener in a large microwaveable mug cake (10-14 oz.) or ramekin. Heat in the microwave until butter is melted, approximately 30 seconds.
- Add the egg and vanilla and stir until combined.
- Add the almond flour, coconut flour, cocoa powder, and baking powder, then stir again.
- Microwave for 40-60 seconds or until risen and firm on the top. The time may vary depending on the size and shape of your mug. I recommend starting with the lowest time and adding more time if needed.
- Serve warm with keto ice cream, keto whipped cream, or your favorite keto frosting.
Video
Notes
- You can use your sweetener of choice.
- Use dairy-free butter to keep this keto mug cake dairy-free.
- Use a large mug and don't fill it more than half to ⅔ full. You'll avoid a mess and a cake that doesn't set in the middle. Or divide the batter into two smaller ramekins to make two keto mug cakes.
- Don't skimp on the baking powder. A keto mug cake needs a leavening agent, so ¼ teaspoon baking powder is necessary to make your cake rise. Otherwise, you may end up with a spongy, flat disk instead of a fluffy, springy cake.
- Always start with the lowest necessary cooking time. You can add a few seconds at a time if needed until your cake is firm in the center, but don't go over one minute.
Mary jo
Can you make this ahead like two hours and then bake It
Four Score Living
Hello Mary Jo,
Thank you for reaching out! To prep this recipe ahead of time, we would recommend mixing up the dry ingredients (almond flour, coconut flour, baking powder and cocoa powder) and setting them aside to save time later. We have not tried making the fully mixed batter ahead of time. Anything with eggs and butter would have to be refrigerated until it was baked.
I hope this helps!
Thank you,
The Four Score Living Team
Jill
Delicious!!! So glad I found this recipe!
Four Score Living
We're so glad you liked it. Thank you for taking the time to stop back by and let us know you liked it.
The Four Score Living Team
Kathy
Made it tonight! Great treat!
Four Score Living
We're so glad you liked it! Thank you for taking the time to stop back by and let us know.
The Four Score Living Team
Marie
Very good! New favorite recipe here! I only add a pinch of salt. Sometimes I also add 1/2 teaspoon of instant coffee for a more complex flavor. With ice cream & caramel (keto) and pecan nuts… it's a real delight! Thank you very much for this recipe.
Four Score Living
We're so glad you liked it! Thank you for taking the time to stop back by and let us know.
The Four Score Living Team
Mimi
This was great, I only added 1 tablespoon of sweetner and it was just right for me.
This is moist and filling. My go to mug cake when I need a treat.
Four Score Living
I am so glad you liked it. Thank you for taking the time to stop back by and let me know.
Robbie
I had a desperate sweet craving tonight. I picked this recipe out of the search and I am glad I did. I didn’t have any coconut flour on hand but I will be getting some! It was just a tad dry but I think I cooked it too long. Just what I needed though.
Four Score Living
I am so glad you liked it! Microwaves can cook at different temperatures. Definitely cook it a little less and see if that does the trick.
Debbie
I made it and OMG it was so delicious and so easy to make. Thank you
Four Score Living
You are very welcome. I am so glad you liked it.
HA
Never leave comments but easily the best mug cake recipe on the internet.
Four Score Living
I am so glad you like it. Thank you for taking the time to stop back by and let me know.
Pam
Loved this! Used brown sugar Monkfruit, went over board with the whipped cream, delicious, thank you!
Carol
Absolutely lovely! Thank you so much for posting.
Ox
Subbed out 1 tbls of peanut butter powder for 1 of cocoa, a fresh strawberry diced up onto it and some coconut whipped cream. Definitely would have used some keto syrup to moisten it up and add a lil sweetness after it has been cooked.maybe even omit some sweetner for it.