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A steaming hot chocolate chip mug cake in a white mug, with melted chocolate dripping down the sides and topped with extra chocolate chips.

Chocolate Chip Mug Cake (Ready in 90 Seconds!) – Easy Microwave Dessert

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This chocolate chip mug cake is the perfect single-serving dessert that satisfies your sweet tooth in just 90 seconds. Made with simple pantry ingredients like flour, brown sugar, milk and chocolate chips, this microwave mug cake delivers a warm, fluffy texture with gooey melted chocolate in every bite. No need to heat the oven or dirty multiple dishes – just mix everything in one mug and microwave for an instant homemade dessert. Perfect for late-night cravings, dorm room treats, or when you need a quick chocolate fix without making an entire batch of cookies or cake.

  • Total Time: 3 minutes
  • Yield: 1 serving

Ingredients

Scale
Overhead shot of all the ingredients needed to make a chocolate chip mug cake, including flour, sugar, milk, oil, and chocolate chips, arranged on a wooden table.

 

  • 4 tablespoons all-purpose flour
  • 2 tablespoons brown sugar, lightly packed
  • 1/4 teaspoon baking powder
  • 3 tablespoons low-fat milk
  • 1/8 teaspoon vanilla extract
  • 1/2 tablespoon vegetable oil
  • 2 tablespoons semisweet chocolate chips

Instructions

Dry ingredients for a chocolate chip mug cake, including flour and brown sugar, being mixed in a white ceramic mug.

Step 1 – Mix the dry ingredients
Add flour, brown sugar, and baking powder into a microwave-safe mug (8 oz size works best). Stir to combine.

Pouring milk and other wet ingredients into the mug of dry ingredients to create the chocolate chip mug cake batter.

Step 2 – Add the wet ingredients
Pour in the milk, vanilla extract, and vegetable oil. Whisk with a fork until the batter is smooth and lump-free.

Chocolate chips being folded into the mug cake batter, with extra chips sprinkled on top before microwaving.

Step 3 – Fold in the chocolate chips
Mix half of the chocolate chips into the batter. Sprinkle the rest on top for that gooey, bakery-style finish.

The cooked chocolate chip mug cake rising to the top of the mug inside the microwave, with steam coming off of it.

Step 4 – Microwave
Place the mug in the microwave and cook on high for 60 seconds. If your microwave runs hot, check at 50 seconds. The cake should rise just to the rim of the mug.

A perfectly cooked chocolate chip mug cake, steaming hot with gooey melted chocolate dripping down the side of the mug.

Step 5 – Cool and enjoy
Let the mug cool for 2–3 minutes (the chocolate chips will be very hot). Grab a spoon and dig in!

Notes

Mug Size: Use an 8 oz mug for best results. The cake will rise to the top. A larger mug works but cake will be shorter.

Microwave Power: Cooking time based on 1000-watt microwave. Adjust time for different wattages (900W: add 10 seconds, 1200W: reduce by 10 seconds).

Don’t Overmix: Stir just until combined to keep cake tender and fluffy.

Chocolate Distribution: Mixing some chips into batter ensures chocolate throughout, while topping adds visual appeal.

Serving Suggestion: Delicious on its own or topped with whipped cream, ice cream, or a dusting of powdered sugar.

Make It Richer: Substitute butter for oil and whole milk for low-fat milk for more indulgent version.

  • Author: Roz
  • Prep Time: 2 minutes
  • Cook Time: 1 minute
  • Category: Dessert
  • Method: Microwave
  • Cuisine: American
  • Diet: Vegetarian