Staying in ketosis shouldn't have to be hard! But, when that late-night sweet craving hits, it can be awfully challenging to find the right dessert to satisfy those chocolately yearnings! We have the ultimate keto mug cake, that will be the answer to all of your late weeknight sweet craving woes! An ooey-gooey, fudgy cake that won't spoil your progress, with only two grams of carbs - there's absolutely nothing to feel guilty about here, except that you hadn't found this recipe sooner!



  • 1 egg
  • 1 tablespoons heavy cream
  • 1 tablespoon butter, melted
  • 1/4 teaspoon pure vanilla extract
  • 2 tablespoons unsweetened cocoa powder
  • 2-3 tablespoons erythritol or sugar replacement of choice
  • 1/8 teaspoon salt
  • 1/2 teaspoon baking powder


  1. Grease a microwave-safe coffee mug. Set aside.

  2. In a small bowl, whisk the egg just until the yolk and white are blended. Add the heavy cream, melted butter, and vanilla. Mix well.

  3. Next, add the dry ingredients to the wet mixture. Add the unsweetened cocoa powder, sweetener, salt and baking powder. Whisk until well blended.

  4. Carefully pour the cake batter into the greased coffee-mug. Microwave for 1 minute and 30 seconds. The cake will have a lava cake-like consistency in the center. Microwave the cake for 2 minutes if you prefer a more cakey texture.


  • microwave-safe coffee mug
  • small bowl
  • whisk

Recipe Notes

Keto Cup Variations

Make your keto mug cake a little sweeter with the addition of a light drizzle of sugar-free chocolate syrup.

Top your mug cake with Lily's keto-friendly chocolate chips for an added indulgence

Blend in your favorite choice of sugar-free peanut butter powder for an out-of-this-world peanut butter twist on this fudgy guilt-free treat.

Keto Mug Cake Madness

keto mug cake

Deliciously rich, chocolatey, and moist, you'll be able to satisfy your sweetest cravings in under five minutes with our ridiculously easy Keto mug cake recipe. With only eight ingredients, you'll find that this Keto mug cake is particularly simple to prepare, as it doesn't require almond flour or coconut flour, as many traditional Keto mug cakes generally do.

Our Keto mug cake, uses an egg and heavy cream, adding a rich, decadent overall texture to this easy keto dessert, without an unappealing eggy aftertaste.

When choosing your keto sugar alternative, stick to sugars that are the ideal sweeteners for baking keto desserts as some sugar-free options can leave an unpleasant aftertaste, as they are more suited towards beverages.

We recommend a monk fruit and erythritol blend or Swerve when preparing keto desserts to avoid a bitter aftertaste. Avoid sugar-free replacements such as stevia, if you're seeking desserts that taste similar to those baked with real-granulated sugar.

The Best Nacho Recipe Ever The Best Nacho Recipe Ever
Quick and Easy Refrigerator Dill Pickles Quick and Easy Refrigerator Dill Pickles
After Trying This Recipe, You'll Never Eat Salmon the Same Way Again After Trying This Recipe, You'll Never Eat Salmon the Same Way Again