Keto Sauerkraut Chocolate Cake


Secret ingredient low carb cake that will fool everyone!

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This recipe for keto chocolate cake is unconventional but not because it's made with almond flour and oat fiber or that it is sugar-free. This low carb cake is made with SAUERKRAUT which makes it incredibly moist while adding a subtle tanginess to balance the bitter chocolate.

This unconventional combination of sauerkraut in a chocolate cake may seem strange at first, but trust me – it works! The sauerkraut adds moisture and a subtle tanginess to the cake. Don’t let the unusual ingredient discourage you from trying this recipe – no one can tell it’s there. Plus this tender cake is sure to be a hit with all chocolate lovers.

A bite taken out of a slice of chocolate cake on a plate.

Most keto cake recipes can be dry since the sugar substitutes in the cake batter don’t trap moisture like regular sugar does. In order to balance this, sour cream, yogurt or buttermilk are usually added to sugar free cakes, like in keto spice cake. However, the shredded sauerkraut made from cabbage in this chocolate cake works similarly to carrots in carrot cake. It adds moisture without having to add additional fats. The result is a moist spongy cake!

Top with a creamy, sugar-free buttercream chocolate frosting or make a creamy light chocolate mousse to add on top.  The combination will be your new go-to keto chocolate cake recipe!

How to make keto chocolate cake

  1. Prepare sauerkraut – Open a can of sauerkraut made from cabbage. Transfer about 3/4 – 1 cup of sauerkraut to a strainer or mesh sleeve. Press the excess moisture out of sauerkraut using a paper towel. Cut the cabbage sauerkraut into small pieces.
  2. Combine dry ingredients – Mix together almond flour, oat fiber, cocoa powder, baking powder, baking soda and salt. Set aside.
  3. Combine wet ingredients – Cream together butter with sugar free sweetener. Then stir in eggs and vanilla.
  4. Finish cake batter – Slowly add in the dry ingredients and chopped sauerkraut – alternating between the two.
  5. Thin it out – Stir in a cup of water to thin out the batter.
  6. Bake – Divide cake batter between two 8 inch cake pans and bake at 350 degrees for 35 minutes.
  7. Make frosting – While cake is cool, make the buttercream frosting using butter, sugar free sweetener, cocoa powder, melted chocolate, cream, vanilla and salt.
  8. Frost cake.

Keto Chocolate Cake Recipe Video

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Keto Sauerkraut Cake Ingredients

Sugar Free Chocolate Buttercream Frosting Ingredients

Keto Sauerkraut Chocolate Cake Directions

  • Keto Sauerkraut Chocolate Cake
  • A side view of a whole chocolate cake with an arrow pointing to it and text that reads "contains sauerkraut?!".

    Sauerkraut in cake

    Using sauerkraut in cake might sound strange, but it’s a great way to add moisture and flavor to your baked goods – like cake or cupcakes in a similar way that shredded carrots adds moisture to carrot cake.

    Sauerkraut is a fermented food made from cabbage that has been shredded and salted. The fermentation process creates beneficial bacteria that are good for gut health, and also adds a tangy flavor to the sauerkraut. However, when this cake is bake, some of the probiotic properties may be lost.

    When sauerkraut is added to cake batter, it helps to keep the cake moist, spongy and tender. The sauerkraut also adds a subtle tanginess that complements the richness of the chocolate from the cocoa powder, creating a unique flavor profile.

    I used canned sauerkraut in this recipe, but you can make your own sauerkraut or use a freshly made jar often found in the refrigerated section of the produce area at the grocery store.

    What is oat fiber

    Oat fiber is a type of insoluble fiber that comes from the hulls of oats. Oat fiber (not to be confused with oat flour) is low in calories and carbohydrates, but high in fiber, making it a popular ingredient in many low carb recipes as it is zero carbs and gluten free.

    When combined with almond flour, oat fiber creates a sponge cake texture similarly to traditional cake made with all-purpose or cake flour.

    A slice of two layered chocolate cake on a plate decorated with frosting.

    Storage information


    Since most keto cakes and baked goods tend to dry out faster compared to their traditional counter parts, it’s still recommended to store this cake in the refrigerator. Cover the cake with plastic wrap or place it in an airtight container. It can be stored for up to 5 days in the refrigerator.


    If you need to store the sauerkraut cake for an even longer period of time, you can freeze it. Wrap the cake tightly in plastic wrap first. Then tightly wrap it in aluminum foil. Place the cake in a freezer bag, and freeze for up to 3 months.

    Keto Sauerkraut Chocolate Cake: FAQS

    Will the cake taste like sauerkraut?

    No, you can't taste the sauerkraut in this cake. Especially if you drain the liquid off of the sauerkraut. The slightly tangy flavor will pair perfectly with the bitter cocoa powder.

    Can I omit the sauerkraut if I don't have any?

    Yes, but then it wouldn't be sauerkraut cake...would it.

    Can I make cupcakes instead of a cake?

    Yes. you can make keto cupcakes instead of cake. Pour into a muffin tray lined with liners and bake at 350 degrees. They will take less time to bake, so check the cupcakes after 20 minutes. The chocolate cupcakes are done baking when an inserted knife comes out clean.

    Nutritional information & Macros

    Nutrition Information

    Keto Sauerkraut Chocolate Cake

    Servings: 12

    Amount Per Serving
    Calories 534
    Fat 52.9g
    Protein 7.7g
    Total Carbs 16.1g
    Net Carbs 3.8g

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      1. I haven’t tried any substitutions for that yet. But if I were to try, I would sub out the oat fiber for coconut flour. Maybe try 1/4 cup.

    1. this recipe calls for oat “FIBER” not ‘FLOUR’ they are different- oat fiber is zero net carbs. Its all fiber. some people choose not to consume oat fiber on the keto diet (because its derived from a grain) but I just wanted to clarify that there is a difference- 😉

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