Keto Birthday Cake Mug Cake | Easy, Low Carb, And Made In 1 Minute

A birthday cake mug cake with a piece about to be removed by a fork.

An easy, low carb, keto birthday cake recipe made in a cup! And the best thing about this keto cake recipe is that 1 minute is all you need to make it. Plus, it tastes just like store-bought funfetti cake, except, obviously, it has way less carbs!



1 Large Egg

1/2 Tbsp (7g) Salted Butter

1 1/2 Tbsps (21g) Unsweetened Vanilla Almond Milk

1/4 Tsp Cake Batter Extract

Just Less than 1/2 Cup (50g) Almond Flour

3 Tbsps (27g) Confectioners Swerve

1/2 Tsp Baking Powder

1/2 Tsp Keto Sprinkles

Keto Frosting:

1 Oz (28g) Full-Fat Cream Cheese

1 1/2 Tbsps (15g) Confectioners Swerve


  1. Add all of the ingredients - sprinkles last - to a medium-sized bowl, and combine them with a spatula.
  2. Coat an 8oz ramekin with baking spray, and add the batter to the ramekin.
  3. Microwave for around 40-50 seconds. Microwave times will vary, but 40-50 seconds was perfect for my 1100 Watt microwave.
  4. You want the cake to look ever so slightly "wet" in the middle of the cake, so add 5-10 seconds of cook-time if needed.

Oven Instructions:

  1. Pre-heat your oven to 350 Degrees F.
  2. Add all of the ingredients to a medium-sized bowl, and combine them with a spatula.
  3. Coat an 8oz ramekin with baking spray, and add all of the cake batter to the ramekin.
  4. Cook for 15-20 minutes


The Macros DO NOT include the “carbs” from Swerve. Swerve has 0 calories, so it should be tracked as 0 carbs. The FDA makes food companies list “sugar alcohols” as carbs, but that doesn’t mean they should be tracked as such. That’s why it’s ALWAYS important to look at the calories of sweeteners and determine the true carb count FROM THE CALORIES!

You can substitute the cake batter extract with vanilla extract. But I would add a little extra Confectioners Swerve if you do.


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