100 Calorie Chocolate Mug cake made with flour, sweetener, cocoa powder, baking powder, coconut oil, milk & vanilla! Done in 30 seconds, this fudgy cake for one is fantastic!

This mug cake comes together so fast and I love the chocolate flavor. I prefer to cook mine for 30 seconds, but you might opt for 35 seconds, for a less fudgy cake. It’s your choice!
You don’t need a large mug to make this recipe. It will only fill a regular sized mug up half way after it’s cooked. Don’t let the small amount of batter make you nervous! It does look like a really small amount before you cook it. It ends up being the perfect amount for a sweet treat.
Sprinkle just a small amount of powdered sugar on top for a little bit of added sweetness. For chocoholic, sugar addicts, who are pathetically impatient like me, this is just divine. I hope you enjoy it.
What is Chocolate Mug Cake?
A chocolate mug cake is a simple recipe for chocolate cake that’s cooked in a mug, in the microwave. No electric mixer needed, just a mug and a small spoon, rubber scraper or whisk. It’s cooked in just 30 seconds. I allow a couple minutes for cooling, then you’re free to sprinkle with powdered sugar and dig in! Chocolate Mug Cake has a great chocolate flavor and isn’t too sweet.
What is the best cocoa powder?
I prefer to use either Premium Cocoa or Ghirardelli cocoa powder for this chocolate mug cake recipe. When the recipe only calls for a few ingredients, each one really counts! If the flavor of the cocoa powder you use isn’t top notch to begin with, the flavor in your mug cake will reflect that. So add the two names I mentioned to your grocery list and pick up a container next time you’re at the store.

100 Calorie Chocolate Mug Cake Recipe
Here’s what you’ll need to make this recipe:
— all purpose flour OR bread flour OR any type of flour you’d prefer!
— If you want this to be around the 100 calorie mark, you’ll need to use a no-calorie sweetener like Stevia. I’ve been using Erythritol. Read the directions on the package of your sugar substitute and make measurement adjustments accordingly. I’ve used sugar, too… which makes it, like, 175 calorie cake.
— cocoa powder- see above for my thoughts on cocoa powder!
— baking powder- we opt for baking powder as a leavening agent in this recipe instead of eggs so that we can cook the cake in less time. It’s also helpful to those with egg allergies!
— milk- or almond milk. Or cashew milk. Or chocolate milk! Use what you’d like, just remember the calorie & sugar counts will vary.
— coconut or canola oil- use what you have on hand!
— vanilla extract- you only use a tiny bit, but it’s important!
–Pinch of salt
How to make Chocolate Mug Cake

100 CALORIE CHOCOLATE CAKE IN 30-SECONDS!
Ingredients
- 2 TBSP flour
- 1 1/2 TBSP no-calorie sweetener You can use sugar, but it adds calories
- 2 tsp. cocoa powder
- 1/4 tsp. baking powder
- Pinch of salt
- 2 tbsp. milk
- 1 tsp. oil
- 1 drop of vanilla extract
Instructions
- Combine the flour, sweetener, cocoa powder, baking powder, and salt in the mug. Whisk gently until until no lumps remain. Stir in the milk, olive oil, and vanilla until smooth.
- Bake in the microwave on high for 30-35 seconds. Do not overcook or it will be rubbery! The cake will continue cooking for the next minute as it sets.
- Cool 3-5 minutes. Serve with a sprinkle of powdered sugar, topped with berries & cream, a drizzle of chocolate sauce, etc.
Video
Nutrition
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How many calories are in Chocolate Mug Cake?
I’ve calculated this mug cake recipe to be 110-158 calories, depending on your exact ingredients. Here is an image showing how I calculated that amount. You must use a no calorie sweetener to get the calorie count this low. You can swap out the regular milk for almond milk if you’d like. I love the flavor of coconut oil in this recipe, but using canola oil doesn’t change the calorie count at all.
How to make Chocolate Mug Cake without an Egg
Regular chocolate cake recipes contain an egg, yet we opted to leave the egg out so that it will cook faster. We added baking powder as a leavening agent, that is, it helps the cake to puff up and rise.

100 Calorie Chocolate Mug cake made with flour, sweetener, cocoa powder, baking powder, coconut oil, milk & vanilla! Done in 30 seconds, this fudgy cake for one is fantastic!











Sandi says
I make this treat on such a regular basis that I decided to make a bulk “cake mix” out of the dry ingredients so that I could measure it out, add the wet ingredients, zap it and enjoy. Saves me a few seconds getting out all the ingredients when I want a treat after dinner. I switched to unsweetened almond milk to save even more carbs so I can top the cake with whipped cream with less guilt.
Jessica says
Such a great idea Sandi!!
Diana says
Just made this. Fun fact if you eat it right out of the microwave it’s got the consistency of a brownie. Perfect size for a small treat.
Nicole says
that sounds amazing!
Denise says
This was a total fail for me. It did not set up at all. I used almond flour so maybe that was the problem.
Jessica says
Almond flour most definitely bakes differently!
Lauren says
This was absolutely vile! The mixture was so dry so ended up using more milk, but 2 tsp of cocoa powder is too bitter for a no cal sweetener!
Jessica says
It doesn’t sound like you made it correctly…
Jooles says
Thanks so much for posting this! I really fancied a sweet mid-morning snack but am trying to reduce calories! I made this today, using Cadburys Options White Choc Flavour instead of cocoa. i topped it with 10g of ChocShot and a handful of raspberries. Absolutely delicious! Really hit the dessert spot, and for a little over 100kcals that’s fantastic! Also, superquick in the micro So it the sweet-spot before I could snarf anything else “while waiting for my healthy snack to cook! Win-win!
Thanks again! 😋
Jessica says
Glad you enjoyed it! Love the idea to add raspberries!
María Mercedes says
Generally i LOVE your blog. But in this case, it’ s very hurmfull talking about caloríes. It’s hurmfull to relationship with food and body. The calories are unique energy. And all type of food has caloríes and It IS good for us.
There are many people with eating disorder and counting caloríes is a disorder behaviour although It’s seem normal in this society (culture diet).
I Hope you dont feel bad for this. I only share with you my concerns about this problematic. Thank you.
Nellie says
I appreciate your concern. I know that counting calories can be taken to an unhealthy extreme, but I have found that being aware of calories in food helps me to make smart decisions about what I eat. I definitely like to have treats, but knowing how many calories I am eating helps me to be able to indulge without eating way too much.
AlyxJean says
A perfect lil treat.
I like to add ice cream & peanut butter on top. 🤤
Jessica says
Ooh great idea Alyx!