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90-Second Keto Blueberry Mug Cake With Coconut Flour

5 from 1 vote

A light and fluffy blueberry cake that is low carb and keto-friendly. This easy cake cooks in the microwave and is ready in just 5 minutes.

Table of Contents

How To Make Blueberry Keto Mug Cake Recipe

Start by gathering all the ingredients mentioned in the recipe card below: coconut flour, baking powder, Swerve, an egg, vanilla extract, coconut oil, and blueberries. Use a microwave-safe mug for this recipe.

Step-by-Step Instructions

First, in your mug, combine 1 tablespoon of coconut flour, 1⁄4 teaspoon of baking powder, and 1 tablespoon of Swerve (in your blueberries are very sweet, please reduce the sweetener to 1/2 tbsp). Mix these dry ingredients well.

Next, crack the egg into the mug. Add in 1⁄2 teaspoon of vanilla extract and 1 tablespoon of melted coconut oil. Stir these wet ingredients into the dry mixture until a smooth batter forms.

Once your batter is smooth, gently stir in 1 tbsp of fresh or frozen blueberries. You can use more fruit, however, that will increase the net carbs.

Put your mug in the microwave and cook on high for about 90 seconds to 2 minutes, or until the cake has risen and is firm to the touch. Carefully remove the mug (it will be hot), let cool for a moment, and enjoy your gluten-free, dairy-free keto blueberry mug cake!

Keep in mind that microwave powers vary, so you might need to adjust the cooking time slightly. Also remember that while blueberries are low in carbs, they do contain some sugar, so consider this when calculating your daily carb intake if you’re strictly following a ketogenic diet.

Image of Keto Blueberry Mug Cake
Keto Blueberry Mug Cake

Baking Techniques and Tips How To Make Keto Mug Cake

Gluten-Free Dairy-Free Keto Blueberry Mug Cake Coconut Flour

For a delicious, easy, and low-carb dessert, try this Gluten-Free Dairy-Free Keto Blueberry Mug Cake. This one-mug recipe is both quick and flavorful, with fresh blueberries adding a burst of sweet and tart flavor to every bite.

  • Begin by selecting a microwave-safe mug to use for your cake. Ensure it’s big enough to prevent the batter from overflowing during the cooking process. It is always safer to opt for a larger mug than you think is necessary.
  • Mixing your dry ingredients first ensures that you don’t end up with clumps of flour or baking powder in your finished product. Use a fork to blend these ingredients together until they are evenly distributed.
  • Make sure to carefully measure out the coconut flour. Coconut flour is highly absorbent so adding even a little too much can make the batter dry.
  • Blend all ingredients (wet and dry) well until you achieve a smooth consistency. It’s important to ensure that the egg is fully mixed in, as this will give your mug cake the right texture.
  • After your base mix is ready, it’s time to add the fresh blueberries. Simply drop them into your mug and gently stir them into the mixture. If you prefer your mug cake with more fruit, feel free to add a few extra blueberries.
  • Once your mixture is complete, place the mug in the center of your microwave. Cook on high for around 90 seconds, but keep an eye on it to prevent overflowing. Your microwave’s power level might affect the cooking time, so adjust as needed. The cake is ready when it has risen and is firm to the touch.
  • Allow the mug cake to cool for a few minutes before you dig in, as the fruit and cake can be quite hot straight out of the microwave.
  • If you’re looking to impress, garnish your mug cake with some fresh blueberries on top, a sprinkle of Swerve or a hint of your favorite sugar-free powdered sweetener for an extra pretty presentation.

This Gluten-Free Dairy-Free Keto Blueberry Mug Cake is an easy, quick and delicious option for a healthy dessert. Perfect for satisfying a sweet tooth without any guilt!

Image of Keto Blueberry Mug Cake
Keto Blueberry Mug Cake

Health Benefits of Ingredients

Coconut Flour Benefits

Coconut flour is a gluten-free alternative to traditional wheat flour. It’s high in dietary fiber, healthy fats, and protein, which can keep you feeling full for longer and help control blood sugar levels. Additionally, the medium-chain triglycerides (MCTs) in coconut flour may have a positive effect on heart health and some studies suggest it could help with weight loss.

Swerve Sweetener Benefits

Swerve is a zero-calorie, non-glycemic sweetener made from erythritol, oligosaccharides, and natural flavor from fruit and starchy root vegetables. It is a keto-friendly sweetener that doesn’t raise blood sugar or insulin levels and provides a sweetness close that of regular sugar without the associated calories and health risks. It’s perfect for those who are trying to reduce their sugar intake or follow a low-carb diet.

Vanilla Extract Benefits

Vanilla extract doesn’t merely lend your mug cake a sweet, aromatic flavor; it has also been found to have numerous health benefits. This extract contains several antioxidants, including vanillin, which protect your body from damage from harmful environmental factors and toxins. It can also have potential anti-inflammatory and pain-relieving effects, while the smell of vanilla itself is known to have calming properties.

Coconut Oil Benefits

Coconut oil is a rich source of MCTs, which can boost brain function and increase energy levels. It can also help you feel more full and could potentially facilitate weight loss. The lauric acid in coconut oil has antimicrobial properties that can combat harmful microorganisms. Including coconut oil in your diet can therefore support immune health as well as promote heart health.

Blueberries Benefits

Last but not least, we come to one of the most nutrient-dense foods available – blueberries. These tiny fruits pack a powerful punch of antioxidants which can protect against aging and disease. They are also high in fiber and low in calories, making them an excellent addition to any diet. Blueberries have a positive effect on brain health and memory, and the anthocyanins in blueberries may reduce the risk of heart disease by lowering blood pressure and preventing harmful LDL oxidation.

Hence, with every spoonful of this delicious keto blueberry mug cake, you are nourishing your body with a multitude of health benefits, knowing that not only is it satiating your sweet tooth but also contributing to your overall well-being.

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In a world where flavor meets health, our 90-Second Keto Blueberry Mug Cake With Coconut Flour stands as a testament to the delightful possibilities of the keto journey. From its low-carb, gluten-free essence to the quick microwave magic, this recipe is a true ode to mindful indulgence. As you savor each light, fluffy bite, you’re embracing the harmony of taste and wellness. So go ahead, whip up this easy masterpiece, relish the burst of blueberries, and let the joy of guilt-free enjoyment light up your culinary path. Here’s to savoring life’s sweetness, one keto-friendly bite at a time!

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Keto Blueberry Mug Cake With Coconut Flour

5 from 1 vote
Recipe by Rally Rus Course: DessertCuisine: AmericanDifficulty: Easy


Prep time


Cooking time




Net carbs


Total time



Discover the perfect keto treat with our Blueberry Keto Mug Cake with Coconut Flour. Indulge in the classic blueberry taste you love while staying true to your keto lifestyle. Ready in just 90 seconds, this mug cake is a quick, delicious, and low-carb option.
Enjoy the goodness of coconut flour and keto-approved ingredients that result in a moist, tender cake right from your microwave. With the added benefits of antioxidant-rich blueberries, this mug cake is a guilt-free delight suitable for gluten-free diets as well.
Embrace the fusion of flavors in this keto blueberry mug cake made with coconut flour. It's the ideal solution for those craving a sweet treat while adhering to low-carb guidelines. Try it out and embark on a journey of keto-friendly indulgence today.

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  • 1 tbsp 1 coconut flour

  • 1/4 tsp 1/4 baking powder

  • 1 tbsp 1 Swerve

  • 1 pinch 1 Himalayan salt

  • 1 1 egg

  • 1 tbsp 1 coconut oil

  • 1 tbsp 1 fresh blueberries

  • 1/2 tsp 1/2 Vanilla extract


  • Mix your dry ingredients: 1 tbsp coconut flour, 1 tbsp Swerve, 1⁄4 tsp baking powder, and a pinch of Himalayan salt in a microwave-safe mug.
  • Stir well to ensure there are no lumps in your mixture.
  • Next, add in your wet ingredients: 1 medium egg, 1⁄2 tsp of vanilla extract, and 1 tbsp of melted coconut oil.
  • Stir well again to obtain a smooth, homogeneous mixture.
  • Add the blueberries. Push them into the batter a little bit.
  • Place your mug in the microwave and cook it on high for about 1 minute 30 seconds. Keep in mind that microwave power levels can vary, so you might need to adjust the time a bit.


Recipe Video


  • You can use any sweetener.
  • For more information about the ingredients in this recipe, see the detailed instructions above the recipe.
  • You can cook the mug cake in a preheated oven to 440F/220C for 12-15 minutes.
  • To store any leftover Keto Blueberry Mug Cake, let it cool down completely first. Then, transfer it to an airtight container and store it in the refrigerator for up to 3 days. To reheat, microwave it for 15-20 seconds until warm.
  • Top with a dollop of whipped cream or whipped coconut cream for extra indulgence.
  • Drizzle with sugar-free chocolate syrup for a decadent treat.
  • Serve with a scoop of low-carb vanilla ice cream for a refreshing dessert.
  • Enjoy alongside a hot cup of coffee or tea for a cozy snack.

Nutrition Facts

  • Serving: 1g
  • Calories: 224kcal
  • Carbohydrates: 5.6g
  • Protein: 7g
  • Fat: 20g
  • Fiber: 3.2g

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