Our keto chocolate mug cake boasts just 4 net carbs per cake. It's the perfect quick win whenever a sugar craving strikes. You can make it a gooey chocolate mug cake by cutting the cooking time in half.
When making any keto cake, or baking anything keto, ingredients matter. I have used coconut flour for this cake base because it is much lower in calories and healthier than almond flour. Besides having many calories, almond flour is high in omega 6 fats, which for some of us can throw off our Omega 3:6 ratio.
If you have a copy of my cookbook, The Keto Cupcake Cookbook, you know precisely why coconut flour is my top choice for keto cake. In the cookbook, I also talk about different sugar substitutes and when to use each one.
If you'd like to order the cookbook, use the coupon code TARAKETO to save 10% off your entire purchase. While you're there, check out our line of planners, tear-off pads, & journals.
Choosing A Granulated Sugar Substitute
Our favorite sugar substitutes for this keto chocolate mug cake, in order of preference, include:
- BochaSweet, granulated or powdered
- Lakanto's Monk Fruit Blend, original, granulated
- Lakanto's Monk Fruit Blend, powdered (1/2 the amount)
- Lakanto's Monk Fruit Liquid Sweetener (15-30 drops)
- Liquid Stevia (15-30 drops)
- Allulose + 10 drops liquid Stevia
If you struggle to get the granulated sugar substitute to dissolve, powder it. You can powder any granulated sugar substitute in your kitchen with any blender. We use our magic bullet or pull out our Vitamix for even finer powdered sugar.
BochaSweet has the closest taste to sugar and measures cup for cup. Lakanto's Monk Fruit Blends are also delicious as they are a blend of two sugar substitutes - monk fruit and erythritol. We have Lakanto's sugar substitute original blend, golden blend, and powdered (which is 2x as sweet as sugar) in our pantry at all times. If you'd like to try them out, order directly through their website and use coupon code TARAKETO for 20% off your purchase.
Liquid stevia or monk fruit can be used individually or, my preference, half of each. We find a range of 15-30 drops works well in the keto chocolate mug cake. However, be sure to taste-test your batter and add drops to get to your desired sweetness level.
Lakanto's Monk Fruit Blend is a blend of erythritol and monk fruit, and the original blend measures cup for cup to sugar. However, their powdered blend is 2x as sweet as sugar; reduce the amount of sweetener in any recipe in half.
When using allulose, it is only about 70% as sweet as sugar, so we add liquid stevia drops until we are happy with the sweetness level.
To find your favorite sweetener for keto chocolate mug cake, try all the different options over time. You'll find additional information on these sugar substitutes in our guide here.
Toppings For Keto Chocolate Mug Cake
There are many keto-friendly ways to dress up your mug cake. You can use a sprinkle of Lakanto's Monk Fruit Powdered blend, top it with Lakanto's Sugar-Free Chocolate Chips or Whole Foods Sugar-Free Chocolate chips, or make any of our keto frosting recipes from The Keto Cupcake Cookbook. We have a few frosting recipes on our blog you can make as well.
Easy Keto Glaze
You can also create an easy glaze for your keto chocolate mug cake by combining 1 Tablespoon powdered sugar substitute and 1 Tablespoon warm (almost hot) unsweetened almond milk, coconut milk, or heavy cream and ⅛ teaspoon vanilla, and a dash of salt. Whisk until the sugar substitute has dissolved and drizzle over your cake.
Homemade Whipped Cream
Finally, you can make a small batch of homemade whipped cream if you have a milk frother. Combine 2 Tablespoons of heavy cream and 1/8 teaspoon vanilla and whisk until soft peaks form. Optionally, add a few drops of liquid stevia drops or Lakanto's liquid monk fruit drops to sweeten the mixture. We prefer liquid options because heavy cream whips best when cold, and granulated sugar substitutes don't like to dissolve well in cold liquids.
Ingredients for Keto Chocolate Mug Cake
Here's a few things to peek at….
- cocoa powder
- sugar substitute - We prefer Lakanto's granulated sugar substitute or Bocha Sweet for the cake and either of these powdered for the topping!
- coconut flour
- acacia fiber powder or a pinch of xanthan gum
- baking soda
- olive oil
- vanilla extract
Tutorial Video: Keto Chocolate Mug Cake
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Keto Chocolate Mug Cake
- 4 teaspoons cocoa powder 14 g
- 2 Tablespoons boiling water 60 ml
- 2 Tablespoons sugar substitute We prefer Lakanto's granulated sugar substitute or Bocha Sweet for the cake and either of these powdered for the topping!
- 4 Teaspoons coconut flour 18 g
- 1 teaspoon acacia fiber powder or a pinch of xanthan gum
- ¼ teaspoon baking soda
- 1 Tablespoon olive oil
- 1 egg large
- ¼ teaspoon vanilla extract
- Pinch salt
- Measure boiling water into a mug.
- Mix in sugar substitute and cocoa powder until sugar substitute is dissolved.
- In the mug, stir in olive oil, vanilla, and egg.
- Then stir in coconut flour mixture. Stir for 60 seconds.
- Let mixture rest for 2-5 minutes. This is a great time to put away the ingredients.
- Place the mug in microwave and cook on high until cake is done in the middle about 2 minutes and 15 seconds in a 900 watt microwave. If the cake is too dry, you overcooked it.
- Allow to set for 5-10 minutes to cool before enjoying.
- Top with powdered sugar substitute or homemade whipped cream.
Other Keto Recipes
Note that nutrition information is for a full batch.