Dark Chocolate Espresso Mug Cake

Get ready for a plethora of chocolate cake with this dark chocolate espresso mug cake.

It’s essentially dessert in a mug made with quick oats, dark cocoa powder and coffee. You won’t regret it.

Dark chocolate espresso cake in a mug.
Overhead shot of dark chocolate espresso cake in a white mug.

This espresso cake is cute.

Photos, that is.  Which, I find my plethora comment ironic given that this recipe is suitable for 2 (or let’s be real… one).  

I just went a little crazy here, because this lil mug of dessert is just so adorable that I couldn’t stop snapping pics of it to share with you.  

I mean, seriously.  How cute is this mug cake?!

dark chocolate espresso cake in a white mug on a wooden table.
Overhead view of dark chocolate espresso cake.

What’s in this dark chocolate espresso cake?

So it’s a mixture of quick oats, dark cocoa powder, cold brew coffee, dark chocolate chips and a few other standard cake ingredients.  

Once it’s mixed together, the batter goes into a cute coffee mug and a quick 90 second trip in the microwave.  And voila!  You have a Dark Chocolate Espresso Mug Cake.

You guys think I’m crazy, right?  A few ingredients and less than 2 minutes in the microwave CAN make a deliciously moist cake.  

I didn’t believe it either, until I stuck my fork in, took a (big) bite, and was sent to heaven for a couple of chews.  

It’s SO good, you’ll just have to try it for yourself if you don’t believe me.

I really can’t think of a better way to spend 2 minutes.

Side view of dark chocolate espresso cake.
Metal spoon scooping out dark chocolate espresso cake from a mug.

Dessert… or breakfast?

And let’s just go ahead and say this is suitable for breakfast since it 1) gives a sweet little caffeine boost and 2) contains oats.  

Sounds like breakfast to me.


Dark Chocolate Espresso Mug Cake

This dark chocolate espresso cake is dessert in a mug made with quick oats, dark cocoa powder, cold brew coffee and dark chocolate chips and is so good!

  • Author: Julie Andrews
  • Prep Time: 5 mins
  • Cook Time: 2 mins
  • Total Time: 7 mins
  • Yield: 2 Servings 1x
  • Category: Dessert
  • Method: Microwave
  • Cuisine: American
  • Diet: Vegetarian


  • ¼ cup quick oats
  • ¼ cup dark cocoa powder
  • 23 tablespoons sweetener (of choice)
  • ½ teaspoon baking powder
  • Pinch coarse salt
  • ¼ cup cold brew coffee
  • 3 tablespoons oil
  • 1 large egg
  • ½ teaspoon vanilla extract
  • 2 teaspoons dark chocolate chips


  1. In a small bowl, whisk together quick oats, cocoa powder, sweetener, baking powder and salt.
  2. In a separate small bowl, whisk together coffee, oil, egg and vanilla extract. Pour wet ingredients into the bowl with dry and whisk, just until combined. Fold in chocolate chips.
  3. Coat a large microwaveable coffee mug with cooking spray. Pour batter into mug. Microwave on high for 90 seconds.


  • Serving Size: 1 serving
  • Calories: 349
  • Sugar: 15 g
  • Sodium: 164 mg
  • Fat: 25 g
  • Saturated Fat: 3 g
  • Unsaturated Fat: 21 g
  • Trans Fat: 0 g
  • Carbohydrates: 30 g
  • Fiber: 5 g
  • Protein: 7 g
  • Cholesterol: 93 mg

Keywords: easy, no milk, for two, healthy, without milk, tasty, gluten free

Did you make this recipe?

Did you make this recipe? Share a photo and tag us on Instagram and Facebook @thegourmetRD. We can’t wait to see your creation!

You might also like...

Join the Discussion

Scroll to Top