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Chocolate Cake in a Mug (5 Ingredients)

By Valentina Dimitrova | Updated on November 4, 2026
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Ready in minutes, Chocolate Cake in a Mug is rich, fudgy, and irresistibly gooey. Made with just five ingredients, it's a flourless, eggless treat for breakfast or dessert.

A spoon lifting a gooey piece of chocolate cake from a white mug with melted chocolate on top.

Rich chocolate flavor and an irresistibly gooey center make this healthy mug cake a flourless, eggless treat for breakfast or dessert. Made with five ingredients, it has a dense, fudgy texture and melted chocolate chips. For more single-serving treats, try my Chocolate Lava Mug Cake, Peanut Butter Mug Cake, or Protein Mug Cake.

Quick Look: Chocolate Cake in a Mug

  • ⏱️ Prep Time: 1 minute
  • 🔥 Cook Time: 1 to 2 minutes
  • ⏲️ Total Time: About 2–3 minutes, plus 5 minutes to cool
  • 🍽️ Servings: 1
  • 🥄 Texture: Dense, fudgy, and irresistibly gooey, with a soft, creamy center
  • 🍌 Key Ingredients: Mashed banana, creamy peanut butter, cocoa powder, sweetener, and chocolate chips
  • 🥚 Flourless and Eggless: No flour, eggs, or baking powder required
  • ☕ Mug Size: At least 10 ounces (300 ml)
  • 🔥 Cooking Method: Microwave
  • 🍨 Serving Options: Breakfast or dessert, with optional vanilla ice cream
  • ⭐ Difficulty: Beginner-friendly
  • Why This Recipe Works: Mashed banana and peanut butter give the cake its moist, fudgy texture without flour or eggs, while cocoa powder and chocolate chips add rich chocolate flavor. Its soft, creamy center makes it more like chocolate fudge than a traditional sponge cake.

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Healthy Chocolate Mug Cake

Made with mashed banana and peanut butter instead of traditional flour, eggs, and butter, this healthy chocolate mug cake recipe has a rich, fudgy texture and a soft, gooey center. The banana adds natural sweetness and moisture, while peanut butter helps hold everything together. Unsweetened cocoa powder brings out the chocolate flavor, and the chocolate chips melt into the cake as it cooks.

With just five ingredients, this flourless chocolate mug cake needs no milk or baking powder and takes less than two minutes to cook in the microwave. You can also choose your preferred sweetener, although the nutritional values will vary depending on the ingredients used.

Chef's Notes from Valentina

  • I prefer this chocolate fudge mug cake cooked in the microwave because it has a softer, fudgier texture than the oven-baked version. The microwave also gives it the gooey consistency I love.
  • The center stays soft and creamy, while the middle and bottom are firmer. Its texture falls somewhere between a regular chocolate cake and a lava cake, rather than a light, fluffy sponge.
  • Mug cakes made with eggs tend to have a spongier, more cake-like texture. Mashed banana works as an egg substitute without making the cake dry, which is why I use it in this recipe.
  • You can enjoy this healthy mug cake recipe for breakfast or dessert. For a richer treat, add a scoop of vanilla ice cream or whipped cream. Fresh strawberries also complement the chocolate, or you can serve it with the strawberry sauce from my Strawberry-White Chocolate Flan for a fruity contrast.

Ingredients

Mashed banana, peanut butter, cocoa powder, and chocolate chips arranged in a white bowl before mixing.
  • Mashed banana – ⅓ cup. Use a ripe banana for its sweetness and moisture. It also gives the cake a soft, fudgy texture without eggs.
  • Creamy peanut butter – 2 tablespoons. Adds a mild nutty flavor and richness that goes well with chocolate. Its creamy consistency helps keep the cake moist and dense.
  • Cocoa powder – 2 tablespoons. Choose unsweetened cocoa powder for a rich chocolate flavor with a slight bitterness that keeps the cake from tasting overly sweet.
  • Chocolate chips – 4 tablespoons. Semi-sweet chocolate chips add sweetness and gooey pockets of melted chocolate. Dark chocolate chips work too if you prefer a less sweet cake.
  • Sweetener of choice – 2 tablespoons. Sugar or brown sugar adds sweetness, while maple syrup brings a subtle caramel-like flavor. Adjustments may be needed when using a sugar substitute.

Substitutions And Additions

Different Nut Butter: Swap the peanut butter for creamy almond butter or cashew butter for a milder nutty flavor. Nutella is another option if you prefer a sweeter, more chocolatey cake.

Chocolate Chip Alternatives: Replace the chocolate chips with raisins or chopped nuts for a chewy or crunchy texture. Keep the chocolate chips if you want the gooey chocolate pockets. You can also use fewer chocolate chips to reduce the amount of added chocolate, although the center won't be as gooey.

Different Sweeteners: Use brown sugar, maple syrup, or xylitol instead of regular sugar. Adjust the amount according to your preferred sweetness, especially when using a sugar substitute.

Banana Alternative: Replace the mashed banana with unsweetened applesauce for a milder flavor. Use about ⅓ cup of applesauce, but expect a slightly softer, less dense cake.

Low Calorie Chocolate Mug Cake: Replace regular sugar with a zero-calorie sweetener and use fewer chocolate chips for a lower-calorie mug cake. You'll still get a rich chocolate flavor, although the cake will have fewer gooey chocolate pockets.

Extra Flavors and Mix-ins: Add coconut flakes, cinnamon, almond or vanilla extract, or flavored chocolate chips. Mint, peanut butter, and butterscotch chips are options for changing the flavor.

How to Make Chocolate Cake in a Mug

  1. Mix the batter: In a medium bowl, mash the banana, then stir in the cocoa powder, peanut butter, and sweetener of choice until smooth and well combined. Stir in half of the chocolate chips.
  2. Fill the mug: Pour the batter into a 10-ounce microwave-safe mug, making sure it fills no more than halfway. Sprinkle the remaining chocolate chips on top.
  3. Microwave the cake: Microwave for 1 minute and 20 seconds to 2 minutes, or until the cake is cooked and the center is set.
  4. Cool and serve: Let the cake cool for at least 5 minutes before serving warm or at room temperature. Top with a scoop of vanilla ice cream if desired.
Chocolate mug cake topped with vanilla ice cream, chocolate sauce, and mini chocolate chips.

Expert Tips for Chocolate Cake in a Mug

  • Measure the banana after mashing. Use exactly ⅓ cup rather than estimating from the size of the fruit. Too much banana can make the cake overly soft or mushy.
  • Stir natural peanut butter thoroughly. Mix any separated oil back into the peanut butter before measuring. The cake will have a more consistent texture without oily spots.
  • Sift the cocoa powder. Break up any lumps before adding it to the batter. It will blend more smoothly without leaving dry, bitter pockets of cocoa.
  • Watch the cake as it cooks. Keep an eye on it because the batter can rise significantly and overflow. In a 1200-watt microwave, cooking takes about 1 minute and 20 seconds to 2 minutes. Adjust the time according to your microwave's wattage to avoid overcooking.
  • Consider the mug's shape. Use a wider mug for a shallower cake that cooks faster. A tall, narrow mug may take longer because the batter is deeper. Check the center for doneness to avoid a dry or undercooked cake.

FAQ About Eggless Chocolate Mug Cake

Why is my chocolate mug cake mushy?

Too much banana or insufficient cooking time can make the cake mushy. The center should be soft and fudgy, not runny. If needed, microwave for another 10 seconds and let it cool to firm up.

Can you make chocolate cake in a mug without milk?

Yes! This chocolate cake in a mug without milk gets its moisture from mashed banana and peanut butter. No milk is needed, and the cake has a rich, fudgy texture.

What type of nut butter works best for my Healthy Chocolate Mug Cake recipe?

Creamy peanut butter works best, but almond, cashew, or sunflower seed butter are also good options. Natural and chunky nut butters can work too, depending on the texture you prefer.

Can you make chocolate cake in a mug in the oven?

Yes. Preheat the oven to 350°F (180°C) and bake the cake in an oven-safe mug or ramekin for 15–20 minutes, or until set.

Overhead view of a chocolate mug cake topped with partially melted chocolate chips in a white mug.

What to Serve with Chocolate Mug Cake

  • Vanilla ice cream: Add a scoop to the warm cake for a creamy contrast to its dense, fudgy texture. You can also try my Passion Fruit Mousse for a tangy dessert pairing.
  • Whipped cream: Spoon a little over the cake for a lighter topping. Serve with my Pavlova if you're preparing a larger dessert spread.
  • Fresh berries: Add sliced strawberries, raspberries, or blueberries for a fresh, tart contrast. My Chocolate-Strawberry Slump is another option for guests who enjoy fruit and chocolate desserts.
  • Chocolate sauce: Drizzle a little over the cake for extra chocolate richness. You can also add caramel sauce or a spoonful of dulce de leche if you prefer a different topping.

More Fudgy Chocolate Treats

Did You Love This Recipe? If you make this recipe and love it, stop back, give it a 5-star rating ★★★★★ and leave a comment.

Chocolate Cake in a Mug with melted chocolate chips and a spoon lifting a gooey, fudgy piece.
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5 from 7 votes

Chocolate Cake in a Mug (5 Ingredients)

Ready in minutes, Chocolate Cake in a Mug is rich, fudgy, and irresistibly gooey. Made with just five ingredients, it's a flourless, eggless treat for breakfast or dessert.
Course:Breakfast
Cuisine:American
Prep Time 1 minute
Cook Time 2 minutes
Cooling Time 5 minutes
Total Time 8 minutes
Servings 1
Calories583 kcal
Author Valentina Dimitrova
Cost $ 1.00

Equipment

  • microwave
  • bowl
  • Mug

Ingredients

  • ⅓ cup mashed banana
  • 2 tablespoons creamy peanut butter
  • 2 tablespoons cocoa powder
  • 2 tablespoons sweetener of choice
  • 4 tablespoons chocolate chips
US Customary - Metric

Instructions

  • Mix the batter: In a medium bowl, mash the banana, then stir in the cocoa powder, peanut butter, and sweetener of choice until smooth and well combined. Stir in half of the chocolate chips.
  • Fill the mug: Pour the batter into a 10-ounce microwave-safe mug, making sure it fills no more than halfway. Sprinkle the remaining chocolate chips on top.
  • Microwave the cake: Microwave for 1 minute and 20 seconds to 2 minutes, or until the cake is cooked and the center is set.
  • Cool and serve: Let the cake cool for at least 5 minutes before serving warm or at room temperature. Top with a scoop of vanilla ice cream if desired.

Recipe Notes

Storage and Reheating

Refrigerate: Let the chocolate mug cake cool completely, then cover the mug or transfer the cake to an airtight container. Refrigerate for up to 24 hours, although it's best enjoyed fresh.
Freeze: Freezing isn't recommended because the cake may lose its soft, fudgy texture after thawing.
Reheat: Microwave for 15–20 seconds, or until warm. Avoid overheating, as the cake can become dry and lose its gooey texture.

Nutrition

Calories: 583kcal | Carbohydrates: 80.9g | Protein: 10g | Fat: 30.1g | Saturated Fat: 11.6g | Polyunsaturated Fat: 4g | Monounsaturated Fat: 8.6g | Sodium: 140.4mg | Potassium: 721.5mg | Fiber: 7.2g | Sugar: 60.6g | Vitamin A: 48IU | Vitamin C: 6.5mg | Calcium: 62.5mg | Iron: 2.1mg

** Nutrition labels on easyanddelish.com are for educational purposes only. This info is provided as a courtesy and is only an estimate, since the nutrition content of recipes can vary based on ingredient brand or source, portion sizes, recipe changes/variations, and other factors. We suggest making your own calculations using your preferred calculator, based on which ingredients you use, or consulting with a registered dietitian to determine nutritional values more precisely.

Please note that health-focused and diet information provided on easyanddelish.com is for educational purposes and does not constitute medical advice, nor is it intended to diagnose, treat, cure, or prevent disease. Consult with your doctor or other qualified health professional prior to initiating any significant change in your diet or exercise regimen, or for any other issue necessitating medical advice.

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5 from 7 votes (3 ratings without comment)

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18 Comments

    1. Thank you for giving the recipe a try and for sharing your honest feedback!

      I'm glad you enjoyed the flavor, even though the texture wasn't what you expected. Mug cakes can turn mushy if they're microwaved a little too long, if the mug is on the smaller side, or if microwave wattages vary. Starting with a slightly shorter cooking time and adding a few extra seconds only if needed usually gives the best texture.

      I really appreciate your feedback, and I hope you'll give it another try with those small adjustments.

      Reply

  3. 5 stars
    Another 5 ingredient recipe and it gets better and better, I would definitely love two mugs of this please 🙂

    Reply

  4. Mug cakes are so much fun! And they're perfect portion control. Neat recipe -- thanks.

    Reply

  6. 5 stars
    OMG! Denise this is mouthwatering! So chocolaty and so easy to make, is already on our dessert list 🙂

    Reply

  7. 5 stars
    I love your dark chocolate mug cake. This is such a fun way to make a single serving dessert.

    Reply

  8. Oh my word...I have all of these ingredients except for the sweetened condensed milk...otherwise I'd be making it right now. And I think I'll make it at night when the kids are in bed so that I don't have to share 🙂
    Thanks for the easy quick recipe!

    Reply

    1. You're welcome, Jill! No worries...You can use milk instead of the condensed milk. The four of us here are big fans of this quick and delicious dessert. If you are a chocolate lover, you'll enjoy it. If you have the homemade vanilla Blue Bonnet ice cream like we always do ;), please place a scoop on top. I am telling you: It is to die for... :):):)

      Reply

    2. No sweetened condensed milk
      ⅓ cup mashed banana
      2 tablespoon peanut butter creamy
      2 tablespoon cocoa powder
      2 tablespoon sweetener of choice
      4 tablespoon chocolate chips

      Reply

        1. What she means is that you didn’t put milk or condensed milk in the ingredients of the recipe

          Reply

    1. Nydia: This is a great recipe. Actually, it is the best that have ever tasted. The cake is easy, quick, moist, and very delicious. Try it and let me know., please! I looooooove this cake. xx

      Reply