Keto Diet App - Free Download Keto Diet App - Free Download
Take the guesswork out of following a low-carb diet, lose body fat & feel great!
KetoDiet app is FREE to download!

Keto Single Serve Chocolate Lava Cake

4.7 stars, average of 190 ratings

This post may contain affiliate links, see our disclaimer.

Keto Single Serve Chocolate Lava CakePin itFollow us 148.4k

Do you ever have a sweet tooth but don’t want to make an entire dessert to satisfy your craving? If you answered “yes” then this Single Serve Keto Chocolate Lava Cake is for you!

This easy keto treat will keep your blood sugar levels healthy. Just a few simple ingredients and literally a minute in the microwave and you’ll have one decadent keto dessert that you can eat all by yourself without feeling guilty. If you’re trying to lose weight, an occasional treat can actually help you stick to your keto diet!

Serve whole cake for breakfast or half as dessert after a meal. And if you like quick and easy treats like this one, there are even more keto mug muffins and mug cakes you can try. Enjoy!

Hands-on Overall

Serving size 1 mug cake

Allergy information for Keto Single Serve Chocolate Lava Cake

✔  Gluten free
✔  Dairy free
✔  Nut free
✔  Nightshade free
✔  Pork free
✔  Avocado free
✔  Coconut free
✔  Fish free
✔  Beef free


  • Recipe can be made dairy-free or coconut-free.

Nutritional values (per serving, 1 mug cake)

Net carbs8.6 grams
Protein13.9 grams
Fat32.4 grams
Calories359 kcal
Calories from carbs 9%, protein 15%, fat 76%
Total carbs16.3 gramsFiber7.7 gramsSugars3.3 gramsSaturated fat18.5 gramsSodium394 mg(17% RDA)Magnesium154 mg(38% RDA)Potassium543 mg(27% EMR)

Ingredients (makes 1 servings)


  1. In a small bowl mix together the cacao powder, Swerve, salt, baking powder, and optionally espresso powder. Add in the remaining wet ingredients and mix until smooth.
    Keto Single Serve Chocolate Lava Cake
  2. Grease a small ramekin and pour all but 2 tablespoons of the batter into the ramekin. Use at least 3/4-cup (180 ml) ramekins, or 1-cup (240 ml) ramekins.
  3. Place the piece of dark chocolate in the middle and spoon the remaining batter over it to cover.
    Keto Single Serve Chocolate Lava Cake
  4. Microwave for 1 minute just until the outside is set, it should still wiggle in the middle significantly. If the edges aren’t set cook in 15 second intervals until set.
    Tips for cooking in the oven: If you don't have a microwave, I suggest you multiply the batch to make 4 to 8 servings at once. To do that, use 4 to 8 ramekins instead of 1. Preheat the oven to 175 °C/ 350 °F (fan assisted)and cook for about 10 to 12 minutes. Keto Single Serve Chocolate Lava Cake
  5. Let stand for 1-2 minutes before flipping onto a plate to serve. Serve immediately.
    Keto Single Serve Chocolate Lava Cake

Ingredient nutritional breakdown (per serving, 1 mug cake)

Net carbsProteinFatCalories
Cocoa powder, raw (cacao)
3.4 g3.2 g2.2 g37 kcal
Swerve, natural sweetener (Erythritol and chicory inulin based)
1.5 g0 g0 g6 kcal
Egg, whole, fresh, raw (free-range or organic eggs)
0.4 g6.3 g4.8 g72 kcal
Cream, heavy whipping, pouring, full-fat (30-40% fat)
0.8 g0.6 g11.4 g110 kcal
Vanilla extract, sugar-free, alcohol-based
0.1 g0 g0 g10 kcal
Baking powder, gluten-free
0.3 g0 g0 g1 kcal
Salt, sea salt
0 g0 g0 g0 kcal
Extra dark chocolate (99-100%)
2.2 g3.9 g14 g123 kcal
Total per serving, 1 mug cake
8.6 g13.9 g32.4 g359 kcal

Keto Single Serve Chocolate Lava CakePin itFollow us 148.4k

Do you like this recipe? Share it with your friends! 

Lauren Lester
Creator of Healthful Creative

Lauren Lester

Lauren is a food photographer, recipe developer, and author.

She is the founder of the creative content agency, Healthful Creative. HC specializes in helping food centered brands share their story through recipe development + food photography.

Let us know what you think, rate this recipe!

Leave a comment

Note: Any links to products or affiliate links will not be approved.
Please note that we do not offer personalised advice. For any diet related questions, please join our Facebook community.

Comments (25)

This mug cake is amazingly yummy, even if you don't take into account how quickly it can be whipped up. That it's so easy to make makes it even better - probably my favorite mug cake - thank you!!!!

Thank you so much for your kind words, I'm glad you enjoyed!

This really is a five minute recipe! I was amazed at how simple and delicious this turned out to be. Pure genius, thanks so much for sharing!

Thank you Thomas, glad you enjoyed! 😊

Sounds delicious! Definitely gonna try this.
But one question. (Sorry if I sound stupid, I'm quite new to baking ) I want to cook this in my oven & I'm confused about the part where its mentioned that I'm supposed to bake 4-8 servings at once. What does that mean? Like multiply the recipe by 4 and then bake those in 4 ramekins at 350F for 10 minutes? Or multiply the recipe and bake as a huge cake instead of a mug cake?

Thank you Rebecca, not at all, good question, I should have made it clearer. So the reason I recommend multiplying the batches is that when you make anything in the oven, it would be too wasteful to just make 1 or two servings. You can do that but I prefer to make larger batches. For that you'll need 4 to 8 ramekins instead of just 1. Bake for 10 to 12 minutes and that should be enough. I hope this helps!

My husband was desperate for something sweet and there is never anything by that description in my kitchen 😂, so I quickly made these as a treat. Wow, they were good. I don’t think I cooked mine long enough as there was more lava than cake, but very rich and did the trick!! Thank you. I have finally used up my 500g bag of Sukrin which I am sure I bought three years ago!! My husband is clearly a deprived man!

Thank you Diane, I'm glad you both enjoyed!

This is so lovely, perfect for a weeknight dessert! Like some others have mentioned, this made two servings for me rather than one, so I've saved the second one for dessert tomorrow. If I we're to have this as one serving, I probably would have it on its own as an indulgent breakfast, or dinner when I'm not particularly hungry!
When I made this today, instead of 100% chocolate in the middle I used about 1/2 tsp of peanut butter in the centre of each portion, along with a tiny bit of keto berry jam I had, which basically made these taste like a peanut butter and jam sandwich in the middle... Soooo delish! Next time I'll try it with the chocolate in the middle, or maybe even some hazelnut butter, that would be lush. Thank you for a great, versatile recipe!

PB & J center - what a great idea! Thank you Anu 😊

Hey Martina thanks again for another delicious recipe.  When I made this the batter was to thin to hold the chocolate without sinking. The last time I made this comment (making hot cross buns with 12 eggs) we discovered the large eggs I use are 56 grams where you factor in 50 grams per egg. i added a Tbspn of coconut flour and all was good. Would you suggest this or make my adjustment by not adding the cream? Looking forward to your reply.

Mark, thank you for your kind words! I think you could use 1/2 tbsp coconut flour or cacao powder, although that could make the cake too bitter. You could even use almond flour (1 tbsp). It's best to start with smaller amounts and add more if the batter is too thick. I hope this helps!

I made this with some Keto jam I purchased locally and it was amazing! I put the jam instead of the piece of chocolate

Oh my! This is a keeper!  The carbs are a bit high,  so I split it in half. The other half was yummy the next day.  Thank you!

I’m sorry, I don’t mean to sound like an idiot, but I have read everything in the blog post and nowhere are calories listed, only carbs. Please take a look for yourself, but I swear, I don’t see total calories listed anywhere.  I thoroughly read the post trying to find the calories listed and still cannot.

Hi Marie, if you look at the nutrition facts table (blue table) on this page you will find a detailed breakdown including Calories. You will find it as "Calories 359 kcal". I hope this helps!

I made two of these desserts tonight for me and my sweetheart. They were so delicious and so much better than the mug cakes I’ve made that use almond meal. My only question is how many calories in one dessert?  I looked everywhere on the posted dessert and could not find total calories. Thanks so much!

Thank you for your lovely feedback, Marie! Calories and other macros are listed in the table at the top of the post. I hope this helps!

Have you considered polialcohols from Swerve in total carbs? I know that oftentimes polialcohols are not counted, but I also know that they can actually impact blood glucose in some people and they have to consider them someway depending by the kind of polialcohol or other factors; in my case, for example, xylitol is forbidden because it has a strong impact on my BG; teh same for inulin; erythritol is quite neutral if blended with stevia/monk fruit. And doing very low carb/keto for therpeutic reason I have to count total carbs. So I'd really apreciate if you could let me know how did you calculate total carbs in this recipe. I'm not asking "personal advice", just trying to understand your method and asking for simple information, for the rest I am totally responsible for myself and I know how to balance my diet according to my personal needs 😉 Thank you!

Hi Roberta, I count all sweeteners but they vary based on their impact on blood sugar and calories. For example, sorbitol should be avoided as it significantly affects blood sugar, but Erythritol has zero impact on blood sugar and virtually zero calories. I think with some of them it it's best to try and see how they affect you. I personally avoid Xylitol (digestive issues) but others are fine with it. Swerve is made with Erythritol and FOS. There isn't a standardised way to calculate carbs from sugar alcohols. So the way I calculate net (effective) carbs is by counting all calories as carbs, even if the sweetener has no effect on blood sugar, ie I count 5 g net carbs per 100 g of Erythritol while most people would count it as "0"). Better safe than sorry 😊
You can read more about sweeteners in this post:  Complete Guide To Sweeteners on a Low-Carb Ketogenic Diet

LOVE IT! Absolutely irresistible! Thank you, Lauren!

Compliments Lauren! I love recipes without almond and coconut flour (they are so processed!).

How can organic ground almonds be "processed"? Isn't coconut flour just very fine dehydrated coconut pulp after extracting coconut oil? Unless there are other types of almond and coconut flour... am I missing something? Because if that's the case everything that requires heat is "processed".

I don't have any issues with almonds and coconut but if I eat almond or coconut flour I have a stomach ache so thanks agsin Lauren (and Martina)

Thank you Sosi, I hope you like it! 😊