Single Serving Blueberry Sponge Mug Cake recipe that only takes 1 minute in the microwave to bake! This easy to make low calorie microwave sponge cake recipe will help your sweet tooth cravings!

I’m a dessert kinda girl. I eat dinner, and then sit for about 15 minutes thinking about dessert. What should it be? A few dark chocolate pieces? A strawberry donut? A apple crumble bar? A black bean brownie? The decisions!
Lately I’ve been craving cake but having a entire cake in my kitchen is putting me in the pure danger zone. Say goodbye to the food groups, now it’s just going to be cake.
There’s a easy way to solve this craving though – single serving mug cake! Not only does this taste delicious, but it takes less than 2 minutes to make! 2 minutes for a delicious sugary soft piece of Blueberry Mug Cake? Yes, please!
Tip: Love single serving recipes? Check out my Single Serving Brownie too!

Next time you have a sweet tooth and you want a piece of cake, but know having a full cake in your house isn’t a good move, reach for your mug and make this single serving Blueberry Sponge Cake!
How to Make This Microwave Sponge Cake
Mix together flour, baking powder, salt, sugar, butter, egg and vanilla in a mug.
This recipe uses ½ of a egg. Please only use half of the egg, not the entire thing, as it will be too “egg spongy”.
Tip: If you want to make this eggless, you can substitute 2 tablespoons of applesauce instead of the egg.
Use a spoon and gently stir your blueberries in, careful not to crush them. You can use fresh or frozen berries.
Throw the mug in the microwave for 60-80 seconds. After 60 seconds, check in on it every 10 seconds until you see it has that bouncy cake quality.
Allow to cool down for 1 minute. Eat as is, or sprinkle some powdered sugar on top. You could even add some frosting on top if you’d like!

Take a bite and enjoy this Blueberry Sponge Mug Cake!

more blueberry recipes
Here’s some of my favorite blueberry recipes:
Blueberry Overnight Oats
Blueberry Buckle Crumble Cake
Blueberry English Muffins
Mini Blueberry Muffins
1 Pint Blueberry Jam Recipe
Blueberry Cornbread Muffins


Blueberry Sponge Mug Cake
PrintIngredients
- 1/4 cup all-purpose flour
- 1/8 teaspoon baking powder
- 1 pinch salt
- 1 tablespoon sugar
- 1 tablespoon butter softened
- 1/2 egg beaten
- 2 drops vanilla extract
- 2 tablespoons blueberries
Instructions
- Mix flour, baking powder, salt, sugar, butter, egg and vanilla in a mug. Add blueberries and gently fold into cake batter using a spoon, careful not to crush them.
- Put the mug in microwave for 1 minute. Once 1 minute is up, check to see if it has a cake like texture. If not, microwave for 10 additional seconds. The cake will take 60-80 seconds.
- Allow to cool for 1 minute. Sprinkle powdered sugar on top if desired. Eat directly out of the mug. Enjoy!
Carol Overcash says
It sounds scrumptious. Can you double the batch to make 2?
Pamela says
Absolutely, if you cook both in one mug, you will probably need to add some additional time. Hope that helps! 🙂
Love blueberries says
Wondering about the nutritional value. How many carbs?
Pamela says
Hi! I don’t provide nutritional value on recipes. There’s some good carb calculators that you can find on Google. Hope this helps! 🙂
Terri says
Omg! Well, my fersion is- 1/4 c. Bisquick, 2 tbls.sugar, 2 drops vanilla, 1/2 egg, 8 blue berries. 60 min. To heaven! Topped whip cream. Thanks!
CJ says
I would really like to know how the heck you use half an egg? Thx
Pamela says
Hey CJ. Crack the egg into a bowl, whisk it and only use half of it. 🙂
Rebecca says
Shut the front door! This is awesome!!! Definitely trying this!!!
Rose says
I say use the whole egg and make two! One for dessert and one for breakfast!
Pamela says
I like the way you think Rose!
Emma @ Bake Then Eat says
I’m the same, a whole cake is dangerous. I’m just starting to get into mug cakes they are the perfect solution to keep your sweet tooth happy and not have anything left over tempting you!
Megan - The Emotional Baker says
A whole cake is dangerous! This mug cake is the perfect solution – I love the blueberry flavor 🙂
Anna @ shenANNAgans says
Mug cakes are the only cakes allowed in my house. This one is super beautiful! Cant wait to try. 🙂
Shashi at RunninSrilankan says
You know what Pamela – I’m thinking this mug cake just might be dangerous around me – because I might make and eat and make and eat and repeat till I was out of ingredients – wait – you didn’t want me to do that? 🙂
Dannii @ Hungry Healthy Happy says
We are a little bit obsessed with mug cakes. It’s a good way to eat cake, without having loads of cake leftover.
Diane says
This sounds like a great idea, I also hate making a cake as then it has to be eaten! Blueberries are not easy to find here but I have masses of dehydrated cherries, guess that would work as well.
Thanks for your visit, I will be back. Diane
Sarah says
Yum! I have all the ingredients already + this is perfect weekend treat food. On my to-make list! 🙂
Kelly says
Mug cakes are the perfect solution when you are craving something sweet 🙂 This one looks SO good! Love the blueberries!
Suzanne says
Cake in a mug is the best invention ever. Looks fabulous.
Monica says
I love a fun back-pocket mug cake! this blueberry sponge is so bright and looks ridiculously moist! Great one!
cheri says
Hi Pamela, get idea to help keep one in-line or to just eat fresh cake. Love this recipe!
[email protected]'s Recipes says
Definitely have to give this mug cake a try!
Mary Frances says
2 minutes to make this is delicious mug cake? You are a genius! Love the recipe 🙂
Ashley says
I hear you – having a whole cake in the house is so dangerous! This mug cake is so fun! Yay for blueberries!