Last Updated on December 22, 2021

Delicious Peanut Butter Mug Cake Recipe

You know those days where you are craving something sweet but are just too lazy to make anything or drive to the store, so you rummage through the pantry to find something that will satisfy your fixation, only to find stale raisins and graham crackers? Well, I have an easy recipe for you with ingredients you probably already have! This easy, flour-less, microwave peanut butter mug cake is sure to appease your taste buds.

This easy peanut butter mug cake is fudgy, moist, made in the microwave, and ready in under 5 minutes. Add in some chocolate chips or an extra drizzle of peanut butter on top for the most delicious mug cake recipe.

We love mug cakes over here at Listotic! A lot of care went into perfecting this peanut butter mug cake. As a result, I am happy to say it turned out perfect!

I cannot say no to a peanut butter treat! When you're short on time, this peanut butter mug cake is the perfect treat. For example, it reminds me of a fudgy slice of cake and a peanut butter cookie. Consequently, it has a great flavor without being overwhelmingly sweet. It's a perfect balance!

Because every peanut butter brand is different, for instance, you may have to play with the amount of sugar you add. Typically, I usually only have natural, unsweetened peanut butter on hand (just peanuts and salt). As a result, I find 2 heaping tablespoons of sugar to be perfect. But, most peanut butter has added sugar, so 1 to 1 1/2 tablespoons may be enough.

Can I make a peanut butter mug cake without egg?

Simple! Replace the egg yolk with 1 tablespoon of milk. In my experience, I found that using the egg yolk makes the egg extra moist, but you can certainly just use milk as a substitute.

Can I turn this into a chocolate peanut butter mug cake?

Absolutely! For example, simply add 1-2 tsp of cocoa powder in addition to the peanut butter. As a result, this will give it a light chocolate peanut buttery taste. Perfect for peanut butter lovers!

For this Peanut Butter Mug Cake you will need:

1 Egg
3 tbsp unsweetened peanut butter
2 large tbsp white sugar

First, simply add egg, peanut butter, and white sugar to a bowl and whisk with a fork until completely blended. Additionally, you can toss in a few chocolate chips into the mix. Next, gently stir to combine. Next, microwave for approximately 1 minute to 1 minute 30 seconds, or until you see the top puff up and looks set on top.

For more mug cake recipes, check out some of my favorites!

Or for more Peanut Butter recipes:

3-Ingredient Peanut Butter Dip

Easy 3 Ingredient Peanut Butter Mug Cake

Print Recipe

This easy peanut butter mug cake is moist, fudgy, made in the microwave. The best part is it's ready in under 5 minutes! Add in some chocolate chips or an extra drizzle of peanut butter on top for the most delicious mug cake recipe.

Author: Listotic

Ingredients

Scale

1 Egg
3 tbsp unsweetened peanut butter
2 large tbsp white sugar (a little less if your peanut butter is sweetened)

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Instructions

Combine all of the ingredients into a mug, and whisk with a fork until COMPLETELY blended. This may take a little elbow grease.
Microwave for approximately 1 minute (I have a very high powered microwave, so maybe a little longer depending on the wattage).
That’s it! Enjoy! You will be pleasantly surprised how how tasty this easy mug cake is!

Notes

Try adding a handful of chocolate chips to the batter before microwaving.
Top it with a scoop of ice cream or a dollop of Nutella.
Try replacing 1 tbsp of the peanut butter for Nutella before microwaving.
I use creamy peanut butter for this recipe but you can also use chunky, just depending on whether you want a little crunch!
If you’re watching your calorie intake, you can replace the sugar with a sugar substitute such as Stevia.

In conclusion, from one peanut butter lover to another, I hope you love this easy, delicious flourless peanut butter mug cake!