3 Minute Microwave Guinness Chocolate Cake in a Mug

This week on Jaime’s Lazy Late Night Cooking Corner, the show where I whip up last-minute single serve microwave treats every Thursday while wearing my robe, we are celebrating St. Patrick’s Day with this 3 Minute Microwave Guinness Chocolate Cake recipe.

This is a rich, nutty, and melty-ooey-gooey good Guinness chocolate mug cake. Colleen even had to jump onscreen for a bite, definitely the most popular among the crew of our series’ recipes thus far.

So far in our series, we’ve made Single Serve Microwave Rice Krispy TreatsMicrowave Blueberry Cobbler in a CupMicrowave Strawberry Shortcake for Two, a Microwave Lemon Bar, Two-Minute Microwave Cheesecake in a Cup, and even a Microwave Cinnamon Roll. Now it’s time to watch the video above and learn how to combine Guinness and chocolate for my favorite lazy late-night microwavable treat yet.

Still hungry? Try our famous recipes for One Minute Cup of Coffee CakeSingle Microwave Cookie in a Minute2-Minute Chocolate Nutella Cake or French Toast in A Cup.

Learn how to make 3 Minute Microwave Guinness Chocolate Cake in a Mug in the video above, and also get the recipe after the jump…


3 Minute Microwave Guinness Chocolate Cake in a Mug

A decadent microwave chocolate & Guinness cake.

  • Author: Jaime
  • Prep Time: 5
  • Cook Time: 2
  • Total Time: 7 minutes



1/4 cup flour

5 tbls sugar

2 tbls cocoa powder

1/2 tea baking powder

1/4 cup milk

1/4 cup oil

1 egg

1/8 tea vanilla

1/3 cup Guinness beer


Combine flour, sugar, cocoa powder, and baking powder. Stir.

Add milk, oil, egg, vanilla. Stir.

Add Guinness. Stir.

Microwave one-minute, check. Microwave another minute, check. If needed, microwave one more minute.

Cover with green sprinkles if desired, or perhaps whipped cream.


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Awesome! This chocoholic was hoping you would make a delicious chocolatey treat in this series!


This chocolate cake looks fantastic. The best thing is quick preservation time. Thank you for this wonderful recipe!!!


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