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Keto Peanut Butter Mug Cake

Keto Peanut Butter Mug Cake

This Keto Peanut Butter Mug Cake is like a cross between a chewy peanut butter cookie and a soft peanut butter cake! It's perfect for a quick low carb dessert or a fun keto breakfast!

Disclaimer: This recipe contains some affiliate links. If you choose to purchase an item through one of these links, I may receive a small commission. This does NOT affect your purchase in any way! 

Tips For Making This Keto Peanut Butter Mug Cake

  • This cake reminds me of a chewy peanut butter cookie but if you'd like it more cake like, add a bit of heavy cream to the batter!
  • Don't like peanut butter? Try this cake with almond butter or hazelnut butter instead!
  • All microwaves vary, if yours is quite high heat like mine, you may only need 45s where-as if you microwave tends to heat more slowly, you may need a full minute. You can also bake it less if you want a softer, more gooey cake! 

keto peanut butter mug cake

Ingredients In Keto Peanut Butter Mug Cake

keto peanut butter mug cake

Tools I Used For Making Keto Peanut Butter Mug Cake

  • Small Mug or Ramekin
  • Low Carb Substitution Guide – This is totally optional but if you like my recipes, I now have a $5 guide available with all of the substitutions I use to create every recipe on my site. You can use this to convert old traditional recipes and create new keto recipes! You can purchase it here and/or read more if you are interested. 🙂 I appreciate your support so much guys!
  • Nutritional Food Scale – AKA my best friend. This little buddy has been with me for over 4 years and never fails. Perfect measurements and only needs the batteries replaced maybe once a year!

peanut butter microwave cake

Other Peanut Butter Recipes You May Like:

Keto Peanut Butter Mug Cake

Serves: 1

Ingredients:

  • 1 tbsp + 2 tsp natural peanut butter, melted
  • 1 tbsp butter, melted
  • 1 egg yolk, whisked
  • 1/4 tsp vanilla extract
  • 1 tbsp sukrin brown sweetener, 10g (or another tablespoon of monkfruit sweetener)
  • 1 tbsp powdered monkfruit/erythritol sweetener, 10g
  • 2 tbsp almond flour, 14g
  • 1 tsp coconut flour, 3g
  • 1/4 tsp baking powder
  • pinch of xanthan gum (optional, helps make it chewy!)
  • pinch of salt
  • 1-2 tsp heavy cream (optional, if you want a softer/gooier mug cake)
  • chopped peanuts and/or additional peanut butter for topping

**Note – These are updated directions compared to my youtube video. I found this way easier, you don't have to use an extra bowl and it helps to fully dissolve the sweeteners!**

Directions:

  1. In a bowl (or the greased ramekin/mug you want to use) mix together the peanut butter, butter, egg yolk and vanilla extract until well-combined. 
  2. Add the two sweeteners and mix well once again.
  3. Add the almond flour, coconut flour, baking powder, xanthan gum and salt and mix again until you get a nice thick dough. (You can add 1-2 tsp heavy cream at this point for a gooier cake). 
  4. Press this dough evenly into the bottom of the ramekin or whichever greased mug you plan to use.
  5. Microwave the cake for ~45s then top with additional chopped peanuts and peanut butter if desired and enjoy!

Nutrition facts: 390cals | 33.8g fat | 5.1g NET carbs | 12g protein | 3.8g fiber

peanut butter microwave cake
Print Recipe
5 from 1 vote

Keto Peanut Butter Mug Cake

Prep Time5 mins
Cook Time1 min
Total Time6 mins
Servings: 1 peanut butter mug cake
Calories: 390kcal

Ingredients

Instructions

  • In a bowl (or the greased ramekin/mug you want to use) mix together the peanut butter, butter, egg yolk and vanilla extract until well-combined.
  • Add the two sweeteners and mix well once again.
  • Add the almond flour, coconut flour, baking powder, xanthan gum and salt and mix again until you get a nice thick dough. (You can add 1-2 tsp heavy cream at this point for a gooier cake).
  • Press this dough evenly into the bottom of the ramekin or whichever greased mug you plan to use.
  • Microwave the cake for ~45s then top with additional chopped peanuts and peanut butter if desired and enjoy!

Notes

**Note - These are updated directions compared to my youtube video. I found this way easier, you don't have to use an extra bowl and it helps to fully dissolve the sweeteners!**

Tips For Making This Keto Peanut Butter Mug Cake

  • This cake reminds me of a chewy peanut butter cookie but if you'd like it more cake like, add a bit of heavy cream to the batter!
  • Don't like peanut butter? Try this cake with almond butter or hazelnut butter instead!
  • All microwaves vary, if yours is quite high heat like mine, you may only need 45s where-as if you microwave tends to heat more slowly, you may need a full minute. You can also bake it less if you want a softer, more gooey cake! 
 

Ingredients In Keto Peanut Butter Mug Cake

Nutrition

Serving: 1mug cake | Calories: 390kcal | Carbohydrates: 5.1g | Protein: 8.9g | Fat: 33.8g | Fiber: 3.8g

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