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5 from 4 votes

Coffee Mug Cake (Keto, Low Carb)

A single serving coffee flavored cake that is low carb and keto-friendly. This cake cooks in the microwave in less than 2 minutes!
Servings: 1
Prep Time: 5 minutes
Cook Time: 1 minute
Total Time: 6 minutes
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Ingredients

  • 1 tbsp unsalted butter melted
  • 1 large egg
  • 3 tbsp superfine almond flour
  • 1/2 tsp baking powder
  • 1 1/2 tbsp erythritol sweetener granular
  • 1/2 tsp espresso powder
  • 1/2 tsp vanilla

Instructions
 

  • In a microwave-safe mug (that can hold at least 12 oz of liquid), add all ingredients. Mix with a small whisk until batter is smooth.
  • Cook cake in microwave at full power for about 1 minute 20 seconds. The cake will initially rise quite high while it cooks before settling back down. You can replate the cake in a smaller mug for presentation (which is what I did for the photos in this post). Be careful to not overcook the cake because that will cause the cake to harden as it cools. Top with your favorite frosting or syrup. I topped mine with some whipped cream. Allow the cake to cool a few minutes before eating.

Notes

  • I cooked my cake in a 1100 watt microwave. If your microwave wattage varies signficantly, you may need to adjust cooking time. I find that if it only varies by 100 watts, then the cooking time usually remains the same.
  • I used King Arthur Flour espresso powder.*
  • I used So Nourished Erythritol Sweetener Granular.*
  • *This product link is an affiliate link. This means I earn a small commission from qualifying purchases (at no extra charge to you).
  • The estimated nutrition carbohydrates count excludes sugar alcohols. The net carbs excludes both fiber and sugar alcohols.
Serving: 1cake, Calories: 308kcal, Carbohydrates: 6g, Protein: 6g, Fat: 27g, Saturated Fat: 9g, Sodium: 66mg, Fiber: 2g, Sugar: 1g, NET CARBS: 4
The nutrition information provided are only estimates based on an online nutritional calculator. This is not a comprehensive list of all the nutrients in the recipe (i.e., does not include vitamins, cholesterol, etc). I am not a certified nutritionist. Please consult a nutritionist or doctor for accurate information and any dietary restrictions and concerns you may have.
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