Chocolate Chip Mug Cake (Fluffy, Decadent, The BEST!)

Chocolate Chip Mug Cake in mug with spoon held in hand.

Chocolate Chip Mug Cake (Fluffy, Decadent, The BEST!)

Chocolate Chip Mug Cake is fluffy, sweet, and easy to make in a few short minutes using basic ingredients (and no eggs!) for a yummy, last-minute treat to satisfy any sweet tooth!

Course Dessert

Cuisine American

Prep Time 3

Cook Time 2

Total Time 5

Servings mug

Calories 750kcal

Author Samantha Skaggs

Equipment

14-ounce Microwave-Safe Mug

Ingredients

¼ cup + 2 tablespoons all-purpose flour
2 tablespoons sugar
¼ teaspoon baking powder
¼ cup milk at room temperature
2 tablespoons salted butter melted and slightly cooled
½ teaspoon pure vanilla extract
3 to 4 tablespoons semisweet chocolate chips

Instructions

In a small bowl, whisk together flour, sugar, and baking powder until thoroughly, completely combined, with no streaks of any ingredients remaining. Blend in milk, butter, and vanilla until batter is smooth. Stir in chocolate chips and pour batter into a 14-ounce (or larger) microwave-safe mug with straight sides. Sprinkle with a few extra chocolate chips.
Microwave on high for 1 ½ to 2 minutes, or until mug cake is done to your liking. Allow to cool for a couple of minutes before serving.

Notes

I usually microwave the milk for about 10 seconds just to take off any chill so that it doesn’t re-solidify the melted butter.
If you make this mug cake using unsalted butter, I recommend adding a tiny pinch of salt to the dry ingredients.
As soon as you transfer the batter to the mug, cook the cake immediately so that the chocolate chips don't have time to sink to the bottom.
You may mix the ingredients directly in the mug if you wish (whisk dry ingredients and then blend in wet ingredients), but I find that it can be a bit harder to get the batter smooth due to the narrow shape of the mug. So I like to use a separate bowl for mixing.
I always reserve a few chocolate chips to sprinkle on top of the mug cake before microwaving.
A tall, cylindrical mug with straight (not angled) sides will ensure that the cake bakes evenly. I found a 14-ounce mug to be the perfect size to allow the cake to rise up while baking without overflowing. (If your mug size isn't marked, you can fill it to the top with water and then transfer the water to a measuring cup to determine its capacity.) If you use a smaller mug, you may want to bake the cake on top of a plate or paper towel to catch any possible overflow.
The strength of individual microwaves can vary. The first time you make this recipe, be prepared to experiment a bit to ensure the perfect length of baking time for your particular microwave. I recommend baking for 1 minute, checking, and then baking for additional 15-second increments until fluffy but not gummy.
The nutrition stats for this recipe were calculated for one mug cake. That being said, this Chocolate Chip Mug Cake is pretty darn rich and decadent! So if you're splitting a mug cake between two people (or eating half now and saving the other half for later), simply cut the nutrition facts in half per serving.

Nutrition