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
  • 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

279 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

  • SilkieChickenMama

    SilkieChickenMama a month ago

    I love this for a after dinner snack. I held back a small amount of cream cheese to make drizzle for the top after it was cooked. In addition, I added some toasted pecans on top for some crunch and to balance my macros. Delicious!

    • Shewoff642

      Shewoff642 2 months ago

      Made this again and it's still just as wonderful. Used dehydrated blueberries and whipped cream cheese. Had to cook a minute and a half in the microwave to get the middle done. Otherwise this is 👍👍👍

      • FabulousRadish629465

        FabulousRadish629465 2 months ago

        I'm insulin resistant so made some changes to help me. I LOVE all things coconut, so instead of vanilla I used 1/2 tsp coconut extract, and instead of Blueberries used 1 Tbsp of unsweetened coconut flakes. I also only use allulouse sweetener (1 1/2 Tbsp) since I learned according to my CGM that LOWERS MY BLOOD sugar! (Ben Bikman teaches about this). Turned out GREAT!! Love the taste and textures. This is something we will REPEAT!!! Will modify next for a coconut cocoa powder experiment, looking forward to that as well!

        • IncredibleArugula600515

          IncredibleArugula600515 2 months ago

          This was very good! Would make it again. Note: there is a 1/4 tsp of baking powder in the ingredients, but the instructions do not say where to add it. I added it just before the blueberries.

          • Shewoff642

            Shewoff642 2 months ago

            I did that also and it worked out well. Thanks for the tip.

        • IncredibleArugula849320

          IncredibleArugula849320 2 months ago

          Quick easy and tasty. I’ve cooked this recipe with almond flour and coconut flour. Much prefer almond flour as it gives a better flavour. If using almond flour use 8 tbsps. If your microwave isn’t so powerful then cook for a minute and half.

          • AwesomeCauliflower359999

            AwesomeCauliflower359999 2 months ago

            I had to cook this a bit longer, but ver good. Will use this recipe again with suggested additions

            • BlithesomeKetone993128

              BlithesomeKetone993128 4 months ago

              Wow what an amazing pudding. Great for if I want a desert.

              • NotBrave_JustMe

                NotBrave_JustMe 2 months ago

                Pudding? Did you not bake it? Mine definitely wasn’t a pudding or liquid type product. 🤷‍♂️

            • BlithesomeRadish805948

              BlithesomeRadish805948 5 months ago

              Any instructions for air fryer or oven? I don’t have a microwave

              • Cindy

                Cindy 3 months ago

                350 degrees until it’s done

              • Nuschananny2023

                Nuschananny2023 3 months ago

                Maybe cooked in a gentle bubbling water bath, like some home-made puddings? Or cooked in a non-stick pan. Maybe reduce liquids a bit for that.

            • KnancyHoo

              KnancyHoo 5 months ago

              Fantastic recipe! Came out perfect. I look forward to trying some variations.

              • 2ndchance@life♡

                2ndchance@life♡ 7 months ago

                Tasty, little eggs looking but good. I mixed in coconut shreads

                • PropitiousRadish992454

                  PropitiousRadish992454 7 months ago

                  I’d like to make this but I’m wondering about your comment….what do you mean by “little eggs looking”

              • PattyPatty101

                PattyPatty101 9 months ago

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

                • MirthfulRadish216606

                  MirthfulRadish216606 3 months ago

                  Curious, why is coconut flour only 1Tbsp but if J use an alternative it’s a 1/4 c? Seems a lot? TY

                • Ursula

                  Ursula 6 months ago

                  Yes. Use 1/4 cup

              • Ragaza

                Ragaza 10 months ago

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

                • Tamara06

                  Tamara06 10 months ago

                  I don’t like I l love it 😊

                  • Slsmama

                    Slsmama 10 months ago

                    Everything you need for a balanced breakfast

                    • Blueskymum

                      Blueskymum a year ago

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

                      • OutstandingCauliflower308751

                        OutstandingCauliflower308751 3 months ago

                        4gm carbs is ok

                      • PropitiousRadish992454

                        PropitiousRadish992454 7 months ago

                        4 net carbs per serving is a lot?

                    • Shewoff642

                      Shewoff642 a year 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 a year 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 a year ago

                          A very satisfying treat

                          • KimShimmy

                            KimShimmy a year ago

                            Delicious and so quick and easy to make!

                            • SuperAvocado790832

                              SuperAvocado790832 a year 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 a year ago

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

                                • UnbelievableAvocado991502

                                  UnbelievableAvocado991502 a year ago

                                  Very good A++