Once you try it, my Peanut Butter Mug Cake will be your go-to sneaky sweet treat!
This peanut butter mug cake recipe is the ultimate in quick and easy comfort food which cooks in the microwave.
These delicious little cakes are packed full of peanut butter taste plus I have added chocolate chips. Chocolate + peanut butter = heaven!
You could serve these mini peanut butter cakes topped with another drizzle of peanut butter (like me) or maybe some whipped cream or ice cream.
Table of Contents
Why you will love this peanut butter mug cake recipe
- Almost instant sweet tooth satisfaction.
- Dangerously easy!
What you need to make this peanut butter mug cake
- self raising (self rising) flour - this is plain (all purpose) flour that has baking powder already added when you buy it (see my Top tips further down for how to make your own)
- peanut butter
- salted butter
- milk
- granulated white (table) sugar
- vanilla essence
- an egg yolk
- chocolate chips
*Please see the recipe card below for exact quantities and detailed instructions
How to make this recipe
- Add salted butter to your mug.
- Cover mug with a sheet of paper towel then place in microwave to melt.
- Add peanut butter and mix well.
- Mix in vanilla and white sugar.
- Add milk.
- Mix in egg yolk.
- Add flour and mix until just combined - don't overmix.
- Add chocolate chips in a few additions then place in the microwave to cook.
Choosing the right mug
- Your mug must be made of microwave safe material, as well as no metal rims or decoration. If in doubt, just turn the mug upside down. It's usually written on the bottom of the mug these days.
- Your mug must be a minimum of 350ml (approx 12 oz) capacity for this recipe. That is the size of the mug that you see here in my photos. The larger capacity mug you use, the lower your finished cake will sit in the mug.
- If you use a smaller mug then your mug cake will explode (overflow) out of the mug as it's cooking.
Top tips
- Because it's cooked in the microwave, this cake won't be browned on top like a traditional cake that has been cooked in the oven. This doesn't mean that it isn't cooked or doesn't taste great!
- You want to mix the egg yolk in well to make sure it is evenly distributed in the batter.
- When adding the self raising flour, you only want to mix enough to combine it and smooth out the lumps of flour. Overmixing will give you a more rubbery result.
- Add the chocolate chips gradually, in a few additions. I find if you just add them all at once then mix them through the batter they tend to sink to the bottom. If you are ok with that, then great! If you want them more evenly distributed throughout the cake then add about a third of the choc chips then poke/push them down a little into the batter then repeat with another third, then scatter the remainder over the surface - then don't mix! Then put the mug cake straight in the microwave to cook.
- It's important not to overcook a mug cake. This keeps it light and moist.
- When you take the cooked cake out of the microwave it will sink slightly back down into the mug. Don't worry, this is normal.
- Can't find self raising flour? Just follow this ratio to make your own at home - for every cup of plain flour (150g) add 2 teaspoons of baking powder and sift well to combine.
Serving suggestions and variations
- You can use any kind of chocolate chips you like in this peanut butter mug cake. Milk, dark or white would all be great.
- Up the peanut butter taste by substituting peanut butter chips for the choc chips.
- Drizzle with some extra peanut butter on top if you like. Caramel sauce would be amazing too!
- Serve with a scoop of ice cream, or with some whipped cream.
More mug cake recipes
Vanilla Choc Chip Mug Cake - this chocolate chip mug cake is a moist and fluffy combination of vanilla cake packed with chocolate chips made in a flash in the microwave.
Snickerdoodle Mug Cake - a quick and easy single serve dessert made in the microwave that will totally satisfy your sweet cinnamon cravings!
Other recipes you may enjoy
4 Ingredient Banana Bread - use 3 ripe bananas plus some pantry staples to make an easy homemade banana bread. Best of all it's easy to customize to make your own!
Peanut Butter Chocolate Rice Krispies - combine two great tastes into one deliciously chewy and crispy no bake dessert - peanut butter and chocolate!
No Bake Cherry Ripe Slice - this no-bake, condensed milk slice is a must for Cherry Ripe fans! A chocolate biscuit base, a sweet filling of cherries and coconut topped with a layer of dark chocolate.
Mini Individual Oreo Cheesecakes - you will love these cute little bite-sized desserts! With a whole Oreo cookie as the base, this make ahead dessert has only 5 ingredients too!
📖 Recipe
Peanut Butter Mug Cake (With Video)
Ingredients
- 35 g self raising (self rising) flour
- 40 g peanut butter
- 35 g salted butter
- 2 tablespoon milk
- 30 g white sugar
- ½ teaspoon vanilla essence
- 1 egg yolk
- 1 tablespoon chocolate chips I used milk chocolate
Watch me make this recipe
Instructions
- Place the salted butter in your mug (350ml/12oz capacity or more), then cover the mug with a sheet of paper towel and place it in the microwave to melt for 30 seconds.35 g salted butter
- Add peanut butter and mix until melted and combined.40 g peanut butter
- Mix in white sugar, vanilla essence and milk.30 g white sugar½ teaspoon vanilla essence2 tablespoon milk
- Add egg yolk and mix well until fully combined.1 egg yolk
- Add self raising flour and mix until just combined, smoothing out any lumps of flour.35 g self raising (self rising) flour
- Add chocolate chips a third at a time, gently pushing/poking chips into the batter, and scattering the final third over the surface without mixing.1 tablespoon chocolate chips
- Place mug immediately into the microwave and cook for 1½ - 2 minutes (checking at 1½ minute mark) depending on your microwave.
- The cake is done when it's puffed up, but will still feel spongey to the touch and a little tacky on top. If it needs more cooking, do so in short 10 - 15 second bursts.
- Allow to cool slightly before eating.
Notes
- Because it's cooked in the microwave, this cake won't be browned on top like a traditional cake that has been cooked in the oven. This doesn't mean that it isn't cooked or doesn't taste great!
- You want to mix the egg yolk in well to make sure it is evenly distributed in the batter.
- When adding the self raising flour, you only want to mix enough to combine it and smooth out the lumps of flour. Overmixing will give you a more rubbery result.
- I add the chocolate chips gradually, in a few additions. I find if you just add them all at once then mix them through the batter they tend to sink to the bottom. If you are ok with that, then great! If you want them more evenly distributed throughout the cake then add about a third of the choc chips then poke/push them down a little into the batter then repeat with another third, then scatter the remainder over the surface - then don't mix! Then put the mug cake straight in the microwave to cook.
- It's important not to overcook a mug cake. This keeps it light and moist.
- When you take the cooked cake out of the microwave it will sink slightly back down into the mug. Don't worry, this is normal.
- Can't find self raising flour? Just follow this ratio to make your own at home - for every cup of plain flour (150g) add 2 teaspoons of baking powder and sift well to combine.
This was really easy and I loved it! Big peanut butter fan. Thanks for sharing and the video was helpful too.
My pleasure, David. Glad you like the recipe!