Triple Chocolate Fudge Cake (Low Carb, Sugar Free, THM-S)

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A triple chocolate cake that is strictly for chocoholics! Tender chocolate cake covered in a rich chocolate ganache, with a creamy chocolate buttercream frosting. This recipe is sugar free, low carb, and a Trim Healthy Mama S fuel.

Triple Chocolate Fudge Cake (Low Carb, Sugar Free, THM-S)

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I will just say it right up front - this cake is only for the most serious chocolate lovers. It is intense chocolate! Which I happen to love! Moist and tender chocolate cake with a heavy ganache-type filling, topped with a delicious 2 ingredient buttercream chocolate frosting. It is so rich, you really don't need very much to satisfy.

Do not be intimidated by the number of steps required to make this cake. It is a bit labor intensive, but worth it! (Similar to my Best Brownie Delight recipe!) I served this cake to my best friend, and every two bites she was making exclamations. "Mmmm," "Oh, this is very nice," "Very nice, Sarah!" I think she liked it!

Triple Chocolate Fudge Cake (Low Carb, Sugar Free, THM-S)

The cake is quite simple to make, and most of my readers have probably made the sugar free sweetened condensed milk at some time, so you are already familiar with that process.

The 2 ingredient buttercream frosting is simply butter and Lily's Chocolate Chips. I saw a video on Facebook a long time ago showing this method. (Check out the original video here.) There are many similar recipes on Pinterest. Of course, I used Lily's Chocolate Chips (which are sweetened with stevia) to keep this frosting sugar free.

Triple Chocolate Fudge Cake (Low Carb, Sugar Free, THM-S)

So, what do you need for this cake?

For the Cake:

  • ¾ Cups Baking Blend
  • ⅔ Cups Gentle Sweet (or the equivalent of your favorite sweetener)
  • ⅓ Cup Cocoa Powder
  • ½ Teaspoon Baking Soda
  • ¾ Teaspoon Baking Powder
  • ¼ Teaspoon Mineral Salt
  • ⅓ Cup Melted Coconut Oil (I use refined coconut oil so there is no coconut flavor.)
  • 1 Teaspoon Vanilla
  • 2 Eggs
  • ⅔ Cup Water

For the Ganache:

For the Frosting:

  • ¾ Cup Butter
  • ¾ Cup Lily's Chocolate Chips

And if you don't want to make an entire cake, check out this delicious chocolate Keto Mug Cake! Single serve, and quick and easy to make!

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Triple Chocolate Fudge Cake (Low Carb, Sugar Free, THM-S)

Triple Chocolate Fudge Cake (Low Carb, Sugar Free, THM-S)

Triple Chocolate Fudge Cake (Low Carb, Sugar Free, THM-S)

5 from 12 votes
Print Pin Rate
Servings: 9 Servings

Ingredients

For the Cake:

For the Ganache:

For the Frosting:

Instructions

Make the Cake

  • Preheat oven to 350.
  • In a large mixing bowl, mix all the dry cake ingredients together.
  • Add melted coconut oil, vanilla, eggs, and water and mix well.
  • Pour batter into a greased 8x8 cake pan.
  • Bake in preheated oven for 30-35 minutes, or until center top of cake is dry.
  • Allow cake to completely cool.

Make the Ganache

  • Prepare Low Carb Sweetened Condensed Milk.
  • Mix the Condensed milk with ¼ cup Lily's Chocolate Chips.
  • Using a wooden spoon handle, poke holes all over the cake.
  • Immediately pour the chocolate condensed milk mixture over the holes.

Make the Frosting

  • In a microwaveable container, melt ¾ cup butter.
  • Immediately add ¾ cup Lily's chocolate chips and stir until completely melted.
  • Place in refrigerator for 30 minutes or until the butter hardens.
  • Remove from refrigerator and beat frosting using an electric hand mixer. (The frosting should be thick and fluffy.)
  • Frost cake and refrigerate if desired (but not necessary).

Notes

If you do not have the THM Baking Blend, you can use ¼ cup each of Almond Flour, Coconut Flour, and Flax Meal. Nutrition information per piece: Calories - 519; Fat - 47; Protein - 7; Carbs - 11; Fiber - 9; Net Carbs - 3

Nutrition

Serving: 1g

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65 Comments

  1. Oh man! Your cake was a H-U-G-E hit at the cookout! There were several people who could not have sugar and it was a birthday party for three people so I made the sugar free cake! I didn't even get a pic of it! Such a yummy tasting cake! I hope to make another one Monday! By then my out of town guests will be gone and I won't have to share! I'm so bad! But I will make another one tomorrow if they request it! 😀

    Thanks so much!
    Sharon

    1. I just made this chocolate cake. It’s more than delicious! It’s heaven!! My husband absolutely loves it too!! Thank you so much for the recipe. I look forward to making this for years to come!
      By the way, I will never buy sweetened condensed milk again! I loved making it and the result was worth the work!

  2. I have made this cake three times in three days! Saturday, Sunday, and at 5:30 this Monday morning! I popped it in the oven and went to start my quiet time while waiting for it to bake! You know, it seems like that chocolate sweetened condensed milk is just begging to be in another fabulous recipe!

    1. I'm so glad you enjoy it! Actually the chocolate sweetened condensed milk is really the 2 ingredient fudge recipe. (Just not as many chocolate chips.)

      1. Really! I haven't tried that recipe yet! But I will! I licked that bowl clean after I frosted the cake and I licked the pan clean from the sweetened condensed milk! So yummy! Thanks for sharing!

    2. 5 stars
      This cake is delicious! You can make it dairy free just as easily! Use full fat canned coconut milk in place of the cream and palm shortening in place of the butter and everything turned out just perfect. I did add a little salt since I didn’t use butter and it was FABULOUS!

  3. Pingback: Triple Chocolate Fudge Cake (Low Carb, Sugar Free, THM-S) - Yum Goggle
  4. I am a little confused...Do you add the ganache while the cake is still hot and the ganache is still hot? Let both cool first? Let the cake cool but then pour on hot ganache? Just thinking about it going down into holes 😉 Thanks!

  5. Is there any sub for the chocolate chips? I want to try so many of these recipes, but don't have the secret ingredient.

    1. I would think you could use a chopped 85% dark chocolate bar. I have not tried that, though. 🙂

    1. I have not made it using Pyure, but when I replace Gentle Sweet with Pyure, I usually half the amount. 🙂

  6. Anytime a recipe calls for my precious Lily's chocolate chip's, I'm hesitant to make it. I'm so glad I made this cake! It is the best cake ever! Definitely will be making this one again....and again!!!
    Thank you Sarah for another delicious recipe.

    1. I totally understand the hesitation with using Lily's Chocolate Chips! They are precious, indeed! I'm so glad you liked the cake!

  7. This cake has a great flavor and texture, but my one comment would be to really watch it. I checked it at 20 minutes and it was already overcooked. If I had left it in for 30+ minutes, it wouldn't have been edible. I will make it again for sure, but I will check at 12-15 minutes. Love your mix!

  8. I just made this cake for the first time. The ganache sounded delicious and is, but I think I didn't cook it long enough before putting it on the cake. My cake is completely flooded in the ganache. I put it in the fridge to thicken it, but I'm not sure that will be enough to make it work. Now I don't know how I'll add icing. We haven't eaten it yet, so any ideas on what to do now would be helpful. I'll give an update on how this turns out.

    1. Hi Jennifer! My ganache sits on top of the cake sometimes, as well. I usually just put it in the fridge to firm up a little, then add the frosting on top.

  9. Thank you so much for your beautiful recipes. Do you (or anyone) have any good suggestions for a low carb baking mix that tastes good but is almond free? I have a problem with kidney stones and must be on a low oxalate diet. It's so hard to combine low carb, grain-free, AND low oxalate. 🙁 I feel like I can hardly eat anything anymore. 🙁

  10. Seriously this is the best cake and I didn't even do ganache! Thank you thank you thank you!!! I have all the book and I've been trying different dessert recipes but so far their is just something I don't like about each of them. I was about ready to give up on making THM desserts...UNITL NOW.

    1. You can use Super Sweet. I measure Pyure the same as Super Sweet. I usually cut the amount in half if using Pyure or Super Sweet in place of Gentle Sweet or Xylitol.

  11. 5 stars
    This cake is amazing! All I put on it was the ganache, but I did add extra chocolate chips to it. I couldn’t quit eating the ganache by the spoonful...so delicious! This will be my go to for desserts. Question- I see the nutritional info, but how many servings are there?

  12. 5 stars
    Hi, so I want to thank you for a great recipe! I have reactive hypoglycemia, which means I can't eat sugar or other refined carbs unless I want to be in rough shape a few hours later, and this recipe really hits the spot for someone who's been craving chocolate cake that can't eat sugar or white flour. I made it for my book club meeting last night, and it was a hit!

  13. Pingback: Low Carb Powdered Sugar | My Montana Kitchen
    1. I don't believe cocoa powder would give the desired effect for the ganache in this particular recipe.

  14. 5 stars
    Thank you for the great recipe. I made it using the dairy-free sweetented condensed milk and it was fantastic! Do you have macros for that version?

    1. I'm sorry, but I do not. Those earlier recipes were made before I started adding the macros to my recipes. So glad you loved the recipe! 🙂

  15. 5 stars
    This cake was amazing! I did find the frosting a bit too salty though, so I might just use unsalted butter next time in mine, or even leave it off. The cake and ganache was our favorite part!

    1. I have tried doubling it to make a 9x13, and it did not cook correctly. If you want to try, I would suggest just keeping an eye on it - check it at 25 minutes and every few minutes after that. 🙂

  16. Pingback: Low Carb Brownies with Chocolate Chips and Pecans | My Montana Kitchen
  17. 5 stars
    This recipe was my first attempt at low carb, sugar-free baking......Will definitely make again....and again. Just made the basic cake and topped with the ganache. Used your flax, coconut flour, almond flour substitute and 1/3 c Swerve. Even my “no sugar substitute” husband liked it! Thank you! I’m no longer intimidated to try this new, healthier way of baking for an occasional treat. Looking forward to trying more of your recipes.

  18. Pingback: 2 Minute Chocolate Truffles Recipe | My Montana Kitchen
  19. 5 stars
    I made this for my birthday cake this weekend. It is THE best chocolate cake I've ever had, and I don't mean of just low carb, sugar free cakes either. I mean of ALL chocolate cakes. My husband loves vanilla, so I would love to experiment with making this into an all-vanilla version. Thank you for this gem of a cake!

  20. 5 stars
    I haven't made the cake or ganache, I only used the frosting from this recipe on the zucchini THM chocolate cupcakes. Very yummy and easy buttercream for my two year old's birthday .

  21. 5 stars
    While it looks like a lot of steps, this really was an easy cake to make. It's also absolutely devine. I did add some espresso powder just to bring out the chocolate flavor even more. No complaints about this very rich, delicious cake that I can see myself taking to every event in the near future, especially during the holidays!!! As far as the carb count being listed as 3g net carb each based on 9 servings. The Lily's chips alone have around 24 net carbs once you subtract fiber and sugar alcohol, and your delicious condensed milk had 10 since I only used 1.25 cups, and while the carbs in the flours and cocoa aren't too high, they are still there. Since it is so rich, I manually calculated the nutrition and came out around 49 net carbs for the full cake, so 12 pieces around 4g net carbs and 15 pieces around 3g net carbs (and also brought the calories into a more reasonable range for me personally). I know that THM is different and you guys don't adhere to macros like keto does, but for me a difference of 2-3 net carbs in one item can make a difference in my day. It's another good reason for everyone to do their own nutritional values based on the ingredients they used, it's nice of you guys to even offer the nutrition at all, but everyone should really do their own since there are so many variables in ingredients. Thank you for this delicious recipe!!!!

    1. 5 stars
      I have made this recipe several times and I absolutely love it. As for the carbs, I highly suggest using the Lily's Semi-Sweet Chips since they are 0g net carbs... this makes a big difference. Thanks so much Sarah for this delicious recipe! It really is easy to make, especially if you are like me and keep a jar of the condensed milk in the fridge at all times 🙂

  22. 5 stars
    This cake is the bomb, making it for the second time for my husbands birthday and I'd like to make this a layer cake, any advice 8" rounds.

  23. Can I use coconut cream as a substitute for the heavy cream in the ganache?
    Or just use 1.5 cups of unsweetened almond milk mixed with 1/2 of canola oil!
    Looking for dairy free alternatives and the new Silk heavy cream is not available in my area.
    Thank you!

    1. I think you could probably use the coconut cream, but I have not personally tried it that way.