← BlogJune 28, 2026

How to Make the Perfect Flourless Chocolate Mug Cake

American · Easy · 5 min · 1 servings

vegetariangluten-free
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This intensely rich flourless chocolate mug cake is naturally gluten-free and comes together in seconds in the microwave. Dense fudgy and deeply chocolatey it rivals any fancy restaurant dessert without the wait.

Why this recipe works

This Flourless Chocolate Mug Cake recipe has been crafted to deliver restaurant-quality results in your home kitchen. At just 5 minutes from start to finish, it fits perfectly into a busy schedule without sacrificing flavor. Each serving comes in at 380 calories with 8g of protein, making it a balanced choice for any meal.

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What you will need

This recipe uses 5 simple ingredients that you can find at any grocery store:

  • 3 tbsp dark chocolate chips
  • 2 tbsp butter
  • 1 whole egg
  • 2 tbsp sugar
  • 1 tbsp cocoa powder

Step by step instructions

Step 1: Melt Chocolate and Butter

Place chocolate chips and butter in a microwave-safe mug and microwave for 30 seconds stir and heat again in 15-second bursts until fully melted.

Step 2: Add Remaining Ingredients

Whisk egg sugar and cocoa powder into the melted chocolate mixture until glossy and smooth.

Step 3: Microwave

Microwave on high for 60 to 75 seconds until the edges are set but the center is still slightly fudgy.

Step 4: Serve

Allow to cool for 1 minute then serve with a scoop of vanilla ice cream or a dusting of powdered sugar.

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Easy substitutions

Missing an ingredient? Here are some swaps that work perfectly:

  • dark chocolate chips → semi-sweet chocolate chips for a milder flavor
  • butter → coconut oil for a dairy-free version

Common mistakes to avoid

Watch out for these pitfalls that can affect your results:

  • Overcooking which eliminates the fudgy center and makes the cake dry
  • Burning the chocolate when melting by not using short microwave intervals

Nutrition facts

Per serving: 380 calories, 8g protein, 32g carbs, 24g fat, 4g fiber.

Ready to cook?

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