The peanut butter mug cake is peanut buttery, and oh so soft. This super easy recipe cookies quickly in the microwave in just minutes.
Peanut Butter Mug Cake
I have to tell you a secret! I have a big sweet tooth! I love anything that contains peanut butter. I am always looking for new, quick, and easy recipes to make.
If you can mix, microwave and stir, then you have what it takes to make this yummy treat! I bet you already have these ingredients already on hand in your kitchen, so you don’t even need to make a run to the grocery store to fulfill your sweet cravings.
Why you’ll love this recipe
- only requires basic ingredients
- egg free
- so easy to make
- ready to eat in minutes
- very versatile – it’s so easy to tweak the flavors!
What is a mug cake? (FAQs)
Also known as microwave cake or mug muffin, this single-serving dessert is just the right amount of sweetness to satisfy your sweet tooth. Plus being able to whip it together in less than five minutes is a plus for this busy mom.
Not only are mug cakes easy to make, but they are so easy that the kids can make them for themselves. I love that my family can enjoy this yummy dessert when I’m running around with ball practice, dance lessons, and other activities.
Do you put egg in a mug cake?
No, peanut butter mug cake has no eggs!
So, if you have an egg allergy this recipe is for you to eat! Plus, you can’t even tell that this cake is egg free!
What kind of peanut butter should I use?
I highly recommend that you use creamy, peanut butter. We are a JIF family in our house, but any brand will work.
If you prefer chunky peanut butter, you can use it and follow the same directions on the recipe card.
What kind of mug should I use?
You don’t need any special mug for this recipe. You just need one that is at least standard size and is safe for use in the microwave.
You can also use a microwave-safe ramekin.
How to Make Peanut Butter Mug Cake
You’re going to need a microwave and a microwavable mug or ramekin. Also, you will need a spoon! But that’s all you need! How simple is that? Only two dishes to wash and just a few minutes in the kitchen and you have a tasty and sweet dessert treat that is ready to eat.
- 1 tablespoon peanut butter
- 3 tablespoons butter
- 5 tablespoons all-purpose flour
- 2 tablespoons sugar
- ¼ teaspoon baking powder
- 3 tablespoons milk
- 1 peanut butter cup, chopped (optional)
Step By Step Instructions
This recipe makes 1 serving. It takes about 2 minutes to prepare and less than 2 minutes to cook.
In a small bowl, add the peanut butter and butter.
Place in the microwave for 30 seconds, until melted. Stir to combine.
Add the flour, sugar, and baking powder to the mug. Stir to combine.
Then add the peanut butter mixture and milk to the mug. Stir to combine.
Heat in the microwave for 1 minute and 15 seconds.
If the cake is not done, continue to microwave in 10-15 second increments until done.
Sprinkle the chopped peanut butter cup (if desired) over the top of the cake.
Allow cake to cool for one minute and enjoy!
Leftovers, Storage, & Tips
How do I tell when a mug cake is done cooking?
The best way to tell if your mug cake is done cooking is to touch it with a clean finger.
If there’s batter on your finger, then you need to put it back in the microwave and cook for another 30 seconds. Then once again you will want to touch the top of the microwavable mug or ramekin with a clean finger.
If it feels done, then you’re ready to eat!
How to store leftover mug cake
You can store any leftover cake in an air-tight container in the refrigerator.
You can also cover it with plastic cling wrap or foil.
How to reheat
The best way to warm up your microwavable mug or ramekin is to pour a little bit of water (less than 1/8 teaspoon) into the cup and then microwave in 10-15 second increments.
If you would like, add another 10-15 seconds if the cake is still cool in the center.
More Easy Microwave Desserts To Try
- Not feeling the peanut butter flavor? Try making vanilla mug cake!
- You can get your chocolate fix with microwave fudge too!
- Or try whipping up some S’mores in the microwave!
Peanut Butter Mug Cake
- Place the peanut butter and butter in a small bowl.
- Heat in the microwave for 30 seconds, until melted. Stir to combine.
- Add the flour, sugar, and baking powder to the mug. Stir to combine.
- Then mix the peanut butter mixture and milk with the dry ingredients in the mug. Stir to combine.
- Heat in the microwave for 1 minute and 15 seconds.
- If cake is not done, continue to heat in 10-15 second increments.
- Sprinkle the chopped peanut butter cup over the top of the cake, if desired.
- Allow cake to cook for one minute.