Ultimate Keto Blueberry Sponge Cake In A Mug

#1 Low Carb & Keto Diet App Since 2010

Track macros, calories, and access top Keto recipes.

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  • prep time

    prep time

    3 min

  • cook time

    cook time

    2 min

  • ready time

    ready time

    5 min

Ultimate Keto Blueberry Sponge Cake In A Mug

270 ratings

Instead of making pancakes or waffles, make this easy Keto breakfast recipe that takes way less time to make. This blueberry sponge cake in a mug is soft and fluffy like a pancake but sweet like a cake. Don’t worry, you won’t be adding many carbs to your breakfast, as all sweetening products are replaced with Keto-friendly ingredients. You can assemble the recipe in under 5 minutes, so this is also a great Keto breakfast recipe for anyone who always ends up in a rush in the mornings. Even if you’re in a rush, you can still enjoy this sweet and delicious sponge cake breakfast! If you want to serve your sponge cake with a little whipped cream, you can whip heavy cream and liquid stevia together in a stand mixer or food processor.

Other ingredients to add

Like to have a little more in your sponge cake? Try stirring in crushed nuts for more texture. Keto-friendly nuts include cashews, walnuts, pecan, hazelnuts, and even peanuts. Blueberries also happen to taste very good with lemon. Try mixing a little lemon zest in your dry ingredients!

Can other berries be used?

Blueberries are one of the most Keto-friendly berries out there. If you don’t like blueberries, try raspberries or strawberries. If you’re using strawberries in the mug cake, make sure to chop them finely.

What type of mug should I use?

A heat-safe mug or dish can easily be a coffee cup from your kitchen. Choose any type of ceramic mug to keep your hands safe as well as cook the sponge cake. If you own a ceramic ramekin, you can also cook your sponge cake in there.

  • Net Carbs

    4 g

  • Fiber

    2.8 g

  • Total Carbs

    12.8 g

  • Protein

    5.1 g

  • Fats

    14.5 g

185 cals

Ultimate Keto Blueberry Sponge Cake In A Mug

#1 Low Carb & Keto Diet App Since 2010

Track macros, calories, and access top Keto recipes.

Download on the App Store
Get in on Google Play

Ingredients

  • Butter

    Butter

    1 tablespoon

  • Cream Cheese

    Cream Cheese

    2 tablespoon

  • Coconut Flour

    Coconut Flour

    2 tablespoon

  • The Ultimate Sugar Replacement Granular by Swerve

    The Ultimate Sugar Replacement Granular by Swerve

    1 tablespoon

  • Vanilla Extract

    Vanilla Extract

    1 teaspoon

  • Baking Powder

    Baking Powder

    ¼ teaspoon

  • Raw Egg

    Raw Egg

    1 large

  • Blueberries, Frozen, Unsweetened

    Blueberries, Frozen, Unsweetened

    1-½ tablespoon

Recipe Steps

steps 4

5 min

  • Step 1

    Combine the butter and cream cheese together in a heat-safe container. Microwave the ingredients on high heat for 20 seconds until they’re melted. Stir the butter and cream cheese together into one mixture.
    Step 1
  • Step 2

    Combine the butter and cream cheese mixture with coconut flour, brown sugar substitute, and vanilla extract in the heat-safe dish. You may also wish to add a small pinch of salt. If necessary, you can mix the ingredients in a separate mixing bowl before adding it to your heat-safe dish or mug.
    Step 2
  • Step 3

    Mix the egg into the batter. Follow by folding the blueberries into the batter. It may help you to freeze the blueberries beforehand so they don’t break up and bleed in the batter.
    Step 3
  • Step 4

    Microwave your mug of batter on high heat for 1 minute. The cake should puff considerably! Serve with whipped cream if desired.
    Step 4

Comments 31

  • PattyPatty101

    PattyPatty101 a month ago

    can i use almond flour instead of coconut or any gluten free flour?

    • Ragaza

      Ragaza 2 months ago

      Delicious , I cooked 30s gave a stir and 30s more

      • Tamara06

        Tamara06 2 months ago

        I don’t like I l love it 😊

        • Slsmama

          Slsmama 3 months ago

          Everything you need for a balanced breakfast

          • Blueskymum

            Blueskymum 5 months ago

            Definitely easy and worth making for a treat. But if recipe makes 2 servings its a lot of carbs!

            • Shewoff642

              Shewoff642 5 months ago

              Oh my! This is great and a nice treat to yourself after the hard work of staying in line with keto. Yummy! 👍😁

              • AwesomeMacadamia292496

                AwesomeMacadamia292496 5 months ago

                It just hit the spot 🥰 I am all about pastries and that is my biggest issue but trying these cake just made it easier 😊 to stay on track

                • StupendousKetone831736

                  StupendousKetone831736 5 months ago

                  A very satisfying treat

                  • KimShimmy

                    KimShimmy 5 months ago

                    Delicious and so quick and easy to make!

                    • SuperAvocado790832

                      SuperAvocado790832 6 months ago

                      Super yummy! I added some lemon zest. I made this once with cream cheese, and just now I subbed the cream cheese for crème fraiche, which is similar. A great snack or dessert.

                      • UnbelievableAvocado991502

                        UnbelievableAvocado991502 7 months ago

                        Second time making this recipe and its a keeper. Very good!

                        • UnbelievableAvocado991502

                          UnbelievableAvocado991502 8 months ago

                          Very good A++

                          • DonnaC1063

                            DonnaC1063 a year ago

                            Is this 2 servings in 1 mug?

                            • Higs

                              Higs 9 months ago

                              I am wondering the same thing… I logged the individual ingredients and it read 8 net carbs and 385 calories. Based on that, this does appear to be two servings.

                          • RemarkableArugula311543

                            RemarkableArugula311543 a year ago

                            This is better than any keto "cake" or "muffin" I have ever had! Really hit the spot!

                            • RemarkableArugula196238

                              RemarkableArugula196238 a year ago

                              When do you add the baking powder??

                              • Dyoung61

                                Dyoung61 a year ago

                                with the dry ingredients

                            • PropitiousRadish879493

                              PropitiousRadish879493 a year ago

                              Amazing- so quick easy to make reminds me of steamed canary pudding.

                              • UpbeatRadish172701

                                UpbeatRadish172701 a year ago

                                10 out of 10. AMAZING!!!

                                • OutstandingKetone742863

                                  OutstandingKetone742863 a year ago

                                  Let’s face it, we all crave bready comfort food on this diet. I was looking for a quick fix, but this recipe surpassed my expectations. The cake has a nice light crumb and it’s quite fluffy. I substituted blackberries for blueberries, added a small amount of lemon zest and made a cream cheese icing for the topping. Sprinkle with a little cinnamon and enjoy. This recipe is a winner, I’ll come back to this recipe again and again.

                                  • Leslie

                                    Leslie a year ago

                                    This is the best! To make it really decadent, I slathered on some cream cheese/stevia icing on top!

                                    • MirthfulMacadamia118611

                                      MirthfulMacadamia118611 a year ago

                                      Absolutely beautiful. I love how easy it is to make! Will be having this over and over. I used ricotta and instead of stevia I used Rapadura syrup! 😃😃😃

                                      • StellarKetone637400

                                        StellarKetone637400 a year ago

                                        Is it possible to make this in the oven? I don't have a microwave, and I'm a novice at baking. Thanks

                                        • RemarkableArugula311543

                                          RemarkableArugula311543 a year ago

                                          If you really want it to puff up, try a super hot oven! Like 400- 450 for a short amount of time (5-10min) so good.

                                        • OutstandingArugula496981

                                          OutstandingArugula496981 a year ago

                                          Hi I don’t have a microwave either I made it using almond flour and used two of the small soufflé type ceramic holders the ingredients filled both and I baked them at 160 fan for 20 mins and they have come out perfectly

                                      • Gemma

                                        Gemma a year ago

                                        Excellent recipe. Love it. I swapped blueberries for cranberries and it was delicious.

                                        • LizPepper

                                          LizPepper a year ago

                                          Delish! I made one mug with fresh blueberries and another with a fresh strawberry and it's perfect! I heated them together and for 3 minutes (90 seconds each). Came out just right. Not dry. Oh and I only added had the sweetener to each as 1 tbsp would be too much.

                                          • Heidi

                                            Heidi a year ago

                                            OMG these are amazing!! I made a double batch and instead of using vanilla I used lemon extract. Out of this World. This will be one of my staple go-to recipes for when I have the bread type / sweet type cravings... Highly recommend you try this one.

                                            • RousingKetone586158

                                              RousingKetone586158 a year ago

                                              Perfect! Quick, easy, tasty. I added some cinnamon too.

                                              • Kellbellablue

                                                Kellbellablue a year ago

                                                Light and fluffy, tastes just like a friand! Great recipe that I'll keep going back to 😊

                                                • PurpleKarma

                                                  PurpleKarma a year ago

                                                  Fantastic! Made this for breakfast this morning. I substituted the cream cheese with Greek yogurt, and microwaved for 1.5 minutes. I'll be having this a lot!