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Hi Bold Bakers!
With a brand new 5-week-old, we have to take all the precautions while distancing at home. So that means our film crew is back to being just my husband, Kevin, and me for now! Juggling a baby, having limited ingredients to hand, and small amounts of those said ingredients, I thought what better time to share with you my Best-Ever Chocolate Mug Cake recipe.
When it comes to mug recipes, I pride myself on knowing a thing or two, having over 100 Mug Cakes & Meals — so you know this is going to truly be the Best-Ever!
Everyone needs a little sweet treat once in a while and now is no exception. Plus, I’m betting that you have these mug cake ingredients already and can make this mug cake today! And if you have children out of school right now I’m sure your wheels are turning thinking this is a great recipe for small (and idle) hands.
It is!
What Makes This Chocolate Mug Cake The Best
This is truly a ‘Best-Ever’ recipe because it originated from my Best-Ever Chocolate Cake recipe! Yes, with my limited math skills and lots of time on my hands I divided my chocolate cake recipe down to this cupcake-sized mug cake. I mean, I love that cake so it makes perfect sense I would use the same one just on a smaller scale for a microwave mug cake.
Not only that, but by microwaving a cake it steams instead of getting dry baked like in an oven, leading to a wonderfully moist chocolate cake worthy of “Best-Ever.”

What You Need To Make The Best-Ever Chocolate Mug Cake
4 pieces of kitchen equipment are all you need to make a microwave mug cake, with a 5th optional one:
How to Make A Chocolate Mug Cake
The beauty of a mug cake is you mix, microwave, and enjoy all out of the one mug! Here’s an overview of what you’ll need to do. For measurements, you can get those near the bottom of the page.
- In your microwaveable mug, stir together the dry ingredients with a fork.
- Next, add in the wet ingredients and whisk together with a fork until you have a smooth batter.
- Microwave on high for roughly 45 seconds – 1 minute.
- Decorate with my Chocolate Fudge Frosting and sprinkles before enjoying. Best eaten when freshly made.
I honestly don’t think it could get much simpler — make sure you watch the how-to video to see how it’s done! Then, check out/print the recipe with full measurements down below.

Gemma’s Pro Tips for Making the Best-Ever Chocolate Mug Cake
- Take care not to over mix the mug cake as it can toughen the cake
- Don’t over-microwave! These only need seconds to cook so check after 45 seconds and go from there
- Make sure your mug has no metal or metallic paint on it that will react in the microwave
- If you don’t have a microwave you can bake the mug cake at 350°F (180°C) for roughly 10 minutes
- If you don’t eat eggs you can substitute them using my Egg Substitute Chart
How to Store a Chocolate Mug Cake
So, microwave mug cakes are best eaten once they have cooled from the microwave. Store it at room temperature for 24 hours if there is any leftover, but I’m sure that’s highly unlikely!
Bonus Tip: Mix up the batter beforehand and that can be held in the fridge for 48 hours and microwaved as you wish.

Don’t forget to buy a copy of my NEW Bigger Bolder Baking Every Day Cookbook!