Mornings are the perfect time for savoring life’s simple joys and reflecting on what lies ahead. Now tell me, do you really get that moment? Or does the chaos of work and weekend breakfast prep steal it all away? Well, that used to be me-until I found quick and tasty recipes like peanut butter mug cake!
‘Really, cake first thing in the morning- isn’t it a bit too much? ’ Before you start frowning at my breakfast choice, hear me out first!
This easy peanut butter mug cake isn’t your average sugary snack or heavy dessert. With peanut butter as its core ingredient, this microwave mug cake is packed with protein and healthy fats. Unlike store-bought cakes that just give you a sugar rush and leave you feeling sluggish afterward, this one actually gives you a boost of energy without the crash. Meaning, you get to enjoy the comfort of simple, wholesome ingredients while avoiding the heaviness and guilt that come with overly processed snacks!
And the best part is probably how easy it is– a few ingredients, a mug, a microwave, and you are all set for a healthy, delicious treat of a single-serve cake. With no fuss about elaborate cooking, my mornings are now relaxed and full of good vibes only!

Why You’ll Love This Delicious Peanut Butter Mug Cake
- Rich and creamy deliciousness in every bite.
- Ready in 5 minutes- perfect for quick cravings.
- No fuss about clean-up- made in one mug.
- Soft, fluffy, and rich with nutty goodness!
- Flexible for different dietary needs, like vegan or gluten-free swaps.
Tasty Ways to Personalize Peanut Butter Mug Cake Recipe
Just because it’s a quick recipe doesn’t mean you can’t have all the fun while making this mug cake! In fact, the simplicity actually gives you more time to get creative and add your own twist.
Here are some tasty ways to personalize peanut butter mug cake:
Mini Marshmallows
Want to give your mug cake a playful and inviting appearance? Add mini marshmallows on top and enjoy a toasted, puffed-up, gooey finish that tastes delicious as well!
Sprinkles
Give your peanut butter mug cake a festive look with chocolate jimmies, sugar crystals and confetti sprinkles. Apart from the fun and vibrant look, the sprinkles add a little crunch that’s nicely paired with the soft and fluffy texture of the cake.

Crushed Cookies
Oreos, Biscoff, or graham crackers- which ones do you usually go for? Crush some of these cookies and sprinkle them on top or mix them into your mug cake for an extra burst of flavor.
Creamy Filling
Fill the center of the mug cake with a dollop of jam, Nutella, whipped cream, cream cheese, or better yet- peanut butter itself- for a delicious surprise!
Fruits
Have some leftover fresh or frozen raspberries, blueberries, banana slices or chopped dates in your pantry? Drop them into the batter before microwaving and enjoy a fruity twist that takes your mug cake to the next level.
Espresso
Need a little kick to your breakfast to wake up properly? Stir in a little instant coffee or espresso powder for a mocha-flavored mug cake!
Flavor Variation For Microwave Peanut Butter Mug Cake
The best part about a mug cake is that you can make it with your own desired flavor. Here are some fun ways to switch things up:
Chocolate
For chocolate lovers, you can stir in a tablespoon of cocoa powder and chocolate chips for an extra richness to your chocolate peanut butter mug cake.

Banana Peanut Butter Mug Cake
Mash half of a ripe banana with your wet ingredients before adding dry ingredients to make a super moist peanut butter banana mug cake.
Nutella
If you are a fan of Nutella like me, then you can add a teaspoon of Nutella in the center before microwaving to get the Nutella peanut butter mug cake.
Crunchy and Healthy
If you want to make it healthy as well as have a crunchy flavor to your cake, you can add sprinkles, chopped peanuts, pretzels, or toffee bits. Add a teaspoon of chia seeds or flaxseed for added fiber, or substitute whole wheat flour for regular flour (note that the flavor and texture will change).
Flavor
To add some extra flavor, you can use a pinch of cinnamon, vanilla essence, or a drop of almond essence.
Vegan Version:
Use plant-based milk and a vegan chocolate chip brand. Make sure your sugar is vegan too, to make a completely vegan mug cake.

Tips For The Perfect Mug Cake
First time trying mug cakes? No worries- here are easy tips to get you started:
- Make sure you are using a microwave-friendly mug that can hold at least 12 ounces to give the cake room to rise without overflowing.
- Do NOT overmix the batter as that may lead to a dense and rubbery mug cake instead of the soft and fluffy one you want!
- Mug cakes bake super quickly. It’s best to keep an eye on the microwave as it’s baking to prevent overcooking the cake.
- For a softer texture, add a tiny spoonful of yogurt or applesauce and enjoy a rich, moist mug cake that melts in your mouth.
- For adding toppings like whipped cream, sprinkles or syrup, it’s best to wait for the mug cake to cool slightly so they don’t melt right away.

Peanut Butter Mug Cake Recipe
Ingredients
- 2 tbsp / 32 g Peanut Butter
- 3 tbsp / 45 ml Milk
- ¼ tsp / 1.25 ml Vanilla Essence
- 4 tbsp / 30 g All-Purpose Flour
- ¼ tsp / 1 g Baking Powder
- 2 tbsp / 24 g Granulated Sugar
- 1 tbsp / 15 g Chocolate Chips
Equipments
Instructions
Add Dry Ingredients
- Grab a 12-oz microwave-safe mug, add flour, baking powder, and sugar into the mug.
- Mix well using a fork or a small whisk to give a good mix.
Mix Wet Ingredients
- Then, add peanut butter, milk, and vanilla essence to it.
- Use a fork or a small whisk to stir the ingredients until the batter is completely lump-free and smooth.
Stir In Chocolate Chips and Microwave
- Stir 1 tablespoon of chocolate chips into the batter and sprinkle a few extra on top for added gooeyness.
- Place the mug in the oven and microwave for 1 to 1.5 minutes.
Cool, Serve and Enjoy!
- Once baked, let the mug cake cool for 1-2 minutes before eating.
- Enjoy the warm, delicious peanut butter mug cake either plain or topped with a scoop of your favorite Ice cream or a drizzle of peanut butter for extra indulgence!
Peanut butter mug cake is more than just a dessert to me- it’s my little reason to smile and have the chance to unwind after a long day at work. When I don’t feel like doing anything(except binge-watching TV shows!)I just mix up the batter and throw the mug in the microwave. Two minutes later, I peek in and bam! A warm, gooey, and irresistibly delicious treat is ready to make my day a lot better.
The only downside? It’s way too good, and sadly, I end up finishing it before my show gets halfway done. So, all the peanut butter lovers, if you are thinking of making only one- DON’T. Just double the recipe and have two ready to enjoy the whole experience.
Recipe FAQs
What Type Of Peanut Butter Should I Use For This Recipe?
Both creamy and crunchy types work great for this mug cake- pick the one you like best!
Is This Peanut Butter Mug Cake Gluten-Free?
No, but you can easily make it so by swapping all-purpose flour for a gluten-free blend.
How Do I Store The Leftovers?
Wrap the leftover mug cake with a plastic wrap and store it in an airtight container in the refrigerator for up to 2 days.
Can I Use Almond Milk Instead Of Whole Milk?
Yes, you can use almond milk instead of whole milk to make this vegan peanut butter mug cake recipe.
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