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Special Diet Recipes » Keto

2-Minute Peppermint Mocha Keto Mug Cake (Gluten Free, No Added Sugar)

By Hannah Healy

Updated June 29, 2023

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This post may contain affiliate links. As an Amazon Associate I earn from qualifying purchases. Please read the disclosure policy.

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This post is sponsored by Truvia®, but all opinions and images are my own.

This easy peppermint mocha keto mug cake is a delicious combination of rich spongy chocolate cake with the fresh taste of peppermint and a subtle hint of coffee flavor. The best part is that it cooks in just two minutes!

Close up of peppermint mocha keto mug cake with whipped cream on top sprinkled with green sprinkles in a white mug on a white wooden surface with a red and white striped dish towel in the background

Why I love this recipe

  • The absolute best thing about this recipe is just how quick and easy it is. It takes about 5 minutes to throw together the ingredients and only 2 minutes to cook it in the microwave. It’s the perfect simple holiday treat!
  • This peppermint mocha mug cake is meant to mimic that classic seasonal cafe drink. The cake has a delicious spongy texture and a rich chocolate flavor with subtle hints of peppermint and coffee. I love that the coffee and peppermint in this recipe is not too overpowering–just enough to delight the senses!
  • I used Truvia® Sweet Complete® Granulated All-Purpose Sweetener to make this recipe keto-friendly, low carb and free from added sugar! It’s such a great easy-to-use substitute for regular granulated sugar since you can swap it out 1-to-1 in many recipes.
Close up shot of a small spoon with a bite of the mug cake with whipped cream on top with a red and white striped dish towel in the background
Overhead shot of truvia sweet complete sweeteners one white and one brown on a white wooden surface

Recipe tips

  • Since this is a single serving recipe and peppermint extract is so strong, you only want to use a very small amount of peppermint flavoring. I used 1/16 teaspoon of peppermint extract. If you don’t have a 1/16 measuring teaspoon, try to just eyeball a quarter of the 1/4 tsp measuring spoon. Alternately you can also add 1 drop of dietary grade peppermint essential oil to the recipe instead of peppermint extract. 
  • The instant coffee will add a little caffeine to the recipe. If you prefer no caffeine use decaf instant coffee. 
  • The batter may have a little bitter aftertaste if you try it raw, but once it cooks the bitterness goes away. 
  • The mug cake will rise quite a bit in the mug, so make sure you fill it to about halfway full.
Bronze spoon taking a scoop out of a peppermint mocha mug cake with whipped cream on top sprinkled with green sprinkles in a white mug on a white wooden surface with a red and white striped dish towel in the background

Get Truvia® Sweet Complete® Granulated Sweetener at Walmart!

I loved working with Truvia® Sweet Complete® Granulated Sweetener! It’s so easy to use and bakes and browns in recipes. Make sure you grab your bag at Walmart in store or online! Here are some additional benefits…

  • Zero calories per serving
  • Measures cup-for-cup like sugar
  • Plant-based stevia sweetness
  • Keto friendly
Overhead shot of peppermint mocha mug cake with whipped cream and green sprinkles on top next to two bags of truvia sweet complete sweetener on a white wooden surface next to a red and white striped towel

How to make this Peppermint Mocha Keto Mug Cake

In a bowl or microwave safe mug mix together all dry ingredients including almond flour, cocoa powder, Truvia® Sweet Complete® All-Purpose Granulated Sweetener , instant coffee, baking powder and salt.

Clear jar with dry mug cake ingredients inside on a white wooden surface

Add in the egg, vanilla, butter and peppermint flavoring and mix together with an immersion blender or fork until all ingredients are blended into a thick batter with no lumps.

Overhead shot of mug cake batter in the mixing bowl next to two bags of truvia sweet complete sweetener on a white wooden surface next to a red and white striped towel

If you mixed the batter in a bowl, transfer it to a microwave safe mug. If you mixed it in the mug, you can cook it in that. The cake will rise quite a bit so make sure the mug is only 1/2 full. (my mug was filled to the top because I wanted the slightly overflowed look)

Overhead shot of white mug filled with chocolate cake batter on a white wooden surface

Place the batter filled mug into the microwave and cook on high for 2 minutes. Test the mug cake by sticking a toothpick in to make sure it’s cooked through. If not, microwave for additional 30 second increments until it’s cooked through.

Close up of peppermint mocha keto mug cake in a white mug on a white wooden surface with a red and white striped dish towel in the background

Enjoy with whipped cream or a chocolate drizzle on top!

Close up of peppermint mocha keto mug cake with whipped cream on top sprinkled with green sprinkles in a white mug on a white wooden surface with a red and white striped dish towel in the background
Peppermint mocha mug cake with whipped cream and green sprinkles on top next to two bags of truvia sweet complete sweetener on a white wooden surface next to a red and white striped towel
Close up of peppermint mocha keto mug cake with whipped cream on top sprinkled with green sprinkles in a white mug on a white wooden surface with a red and white striped dish towel in the background

2-Minute Peppermint Mocha Keto Mug Cake

Hannah Healy
This easy peppermint mocha keto mug cake is a delicious combination of rich spongy chocolate cake with the fresh taste of peppermint and a subtle hint of coffee flavor. The best part is that it cooks in just two minutes!
5 from 4 votes
Print Pin Share Rate
Prep Time 5 minutes mins
Cook Time 2 minutes mins
Total Time 7 minutes mins
Course Dessert
Cuisine American, Holiday
Servings 1
Calories 273 kcal

Ingredients
  

  • 3 tbsp almond flour
  • 3 tbsp unsweetened cocoa powder
  • 2 tbsp Truvia® Sweet Complete® All-Purpose Granulated Sweetener
  • 1 tsp instant coffee
  • 1/4 tsp Baking Powder
  • Dash Salt
  • 1 Egg
  • 1/4 tsp vanilla extract
  • 1/2 tbsp room temperature butter
  • 1/16 tsp peppermint extract or 1 drop dietary peppermint essential oil

Instructions
 

  • In a microwave safe mug mix together all dry ingredients including almond flour, cocoa powder, Truvia® Sweet Complete® All-Purpose Granulated Sweetener, instant coffee, baking powder and salt
  • Add in the egg, vanilla, butter and peppermint flavoring and mix together with an immersion blender or fork until all ingredients are blended into a thick batter with no lumps.
  • If you mixed the batter in a bowl, transfer it to a microwave safe mug. If you mixed it in the mug, you can cook it in that. The cake will rise quite a bit so make sure the mug is only 1/2 full. (my mug was filled to the top because I wanted the slightly overflowed look)
  • Place the batter filled mug into the microwave and cook on high for 2 minutes. Test the mug cake by sticking a toothpick in to make sure it's cooked through. If not, microwave for additional 30 second increments until it's cooked through.
  • Enjoy with whipped cream or a chocolate drizzle on top!

Notes

  • Since this is a single serving recipe and peppermint extract is so strong, you only want to use a very small amount of peppermint flavoring. I used 1/16 teaspoon of peppermint extract. If you don’t have a 1/16 measuring teaspoon, try to just eyeball a quarter of the 1/4 tsp measuring spoon. Alternately you can also add 1 drop of dietary grade peppermint essential oil to the recipe instead of peppermint extract. 
  • The instant coffee will add a little caffeine to the recipe. If you prefer no caffeine use decaf instant coffee. 
  • The batter may have a little bitter aftertaste if you try it raw, but once it cooks the bitterness goes away. 
  • The mug cake will rise quite a bit in the mug, so make sure you fill it to about halfway full. 

Nutrition

Calories: 273 kcalCarbohydrates: 15 gProtein: 13 gFat: 22 gSaturated Fat: 7 gPolyunsaturated Fat: 1 gMonounsaturated Fat: 4 gTrans Fat: 1 gCholesterol: 179 mgSodium: 117 mgPotassium: 429 mgFiber: 7 gSugar: 1 gVitamin A: 413 IUCalcium: 134 mgIron: 4 mg
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Silver spoon inserted into a peppermint mocha mug cake with whipped cream on top sprinkled with green sprinkles in a white mug on a white wooden surface with a red and white striped dish towel in the background
2-Minute Peppermint Mocha Keto Mug Cake (Gluten Free, No Added Sugar)
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Hannah Healy

Hannah Healy is the founder of Healy Eats Real, a health and wellness website that provides healthy recipes and helpful information on wellness. Hannah is the published author of The Ultimate Paleo Cookbook. Her work has been featured on Huffington Post, Buzzfeed, Redbook, fitness and MSN.

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