This chocolate mug cake is the ultimate keto dessert for Oreo lovers – this chocolate mug cake is a low-carb, gluten-free, and sugar-free, easy dessert. It’s the perfect treat to crush chocolate cravings without breaking your keto diet.
Made with simple ingredients like coconut flour and sweetener, this mug cake comes together in minutes. The crumbly cake layers with creamy filling are a spot-on low-carb version of traditional Oreo cookies. And at just 2.5 g net carbs per serving, it’s a guilt-free indulgence.
This recipe makes two big keto mug cakes, ideal for sharing or saving one for later. It’s a fun and satisfying way to enjoy a delicious keto chocolate mug cake recipe!
This mug cake is low-carb, gluten-free, sugar-free, and ready in minutes. It’s perfect for following a low-carb diet and satisfying your sweet tooth.
Watch me make this recipe in my quick video – it’s like cooking together in the kitchen!
Why You’ll Love This Recipe
This keto Oreo cake in a mug has a crumbly yet moist cake layer and a creamy filling that mimics the taste of traditional Oreo cookies. Plus, it’s made with simple ingredients like coconut flour and sweetener, so you probably already have everything in your pantry. Perfect for indulging a chocolate craving without any guilt!
Each serving of this low-carb mug cake has only 2.5 g net carbs, making it a fantastic option for those watching their total carbs. Note: this recipe makes two big keto cakes – perfect for sharing or saving one for later.
Recipe Story
As a huge fan of Oreo cookies, I missed them dearly when I started keto. I searched for keto-friendly alternatives but found most were too dry or lacked that real thing taste.
So, I experimented with different recipes, combining ideas from great recipes I’d seen online. Finally, I created this delicious keto chocolate mug cake recipe that’s rich, crumbly, and perfectly balanced with a creamy filling.
Unlike most microwave recipes, this cake delivers on flavor and texture. I’ve even served it to non-keto friends, and they couldn’t believe it was low-carb!

Ingredients
This keto Oreo mug cake is made with simple and wholesome ingredients that you can easily find in your kitchen. Here’s what you need to make this scrumptious cake:
Keto Mug Cake Batter:
- coconut oil: liquid gold that weaves a creamy symphony.
- egg: the binding virtuoso.
- vanilla extract: a whisper of perfection.
- coconut flour: a tropical dance on your palate.
- Swerve: our sweet, guilt-free companion.
- cocoa powder: the cocoa maestro.
- baking powder.
- Himalayan salt: the elevated note of extraordinary.

Blissful Keto Mug Cake Filling:
- coconut oil: more coconut magic!
- almond milk: the keto friendly and dairy-free maestro.
- powdered Swerve: our sweet sorcerer.
- Himalayan salt: a dash of magic to elevate the flavor
Delight in the symphony of flavors, where the magic of coconut oil takes center stage, binding every essence in a creamy embrace. This oil, derived from the mature coconut’s meat, is a keto treasure.
It’s rich in medium-chain triglycerides (MCTs). It effortlessly transforms into ketones, serving as a source of energy. Revel in the richness of lauric acid, an antimicrobial and anti-inflammatory marvel. Let the keto harmony begin!
Stay Accountable With “My Keto Diet Journal for Beginners: Macros & Meal Tracking Log Ketogenic Diet Food Diary”

Instructions
Prepare the Batter: In a small microwave-safe cup, melt the coconut oil. Add the egg and vanilla extract and whisk well. Stir in the wet ingredients. Mix until smooth.
Microwave It: Microwave the batter for 90 seconds or until a toothpick inserted comes out clean. Adjust the cooking time based on your microwave’s power.
Slice the Cake: Let the mug cake cool slightly, then cut it into four round slices.
Make the Filling: In another bowl, melt the coconut oil, add the almond milk, powdered Swerve, and salt, and mix until creamy. Let it sit for a minute if it’s too runny.
Assemble Your Cake: Spread the filling on one slice, then layer with another slice to create a sandwich. Repeat with the remaining slices.

Tips for Success
- Use a microwave-safe cup for even cooking.
- Substitute almond milk with vegetable oil for a richer filling.
- Add a splash of lemon juice for a slight tang in the filling, enhancing the chocolate flavor.
- Prefer a smoother cake? Use unsweetened cocoa powder for a silkier taste.
Variations & Additions
- Swap Swerve with a different sweetener like monk fruit.
- For extra indulgence, sprinkle chopped keto Oreo cookies or add a dollop of almond butter on top.
More Mug Cake Recipes to Try
- 10 Keto Mug Cake Recipes
- Keto Peanut Butter Mug Cake
- Keto Chocolate Mug Cake With Coconut Flour
- Keto Brownie Mug Cake: Flourless
- For a chocolate fix with extra protein, try my Single-Serve Cottage Cheese Brownie. It’s just as rich and fudgy, but made with simple, high-protein ingredients!
Frequently Asked Questions (FAQ):
Q: What is a mug cake?
A: A mug cake is a single-serving cake that is cooked in a microwave in a mug. It’s a quick and easy way to make a cake without using an oven or a lot of dishes.
Q: Why is my keto filling too liquidy and how can I fix it?
A: The keto filling may be too liquid because of the butter or the almond milk. You can fix it by cooling it in the fridge for a couple of minutes. But don’t let it cool down too much, or it will solidify and be hard to spread. If it becomes too solid, you can heat it up by microwaving it for 10 seconds.
Q: Why use coconut flour for this keto Oreo mug cake?
A: Coconut flour is a low-carb, gluten-free, and high-fiber flour that is made from dried coconut meat. It’s a great alternative to wheat flour for keto and low-carb baking. It also adds a nice coconut flavor and a moist texture to the cake.
Q: Is coconut oil a must-have in this recipe?
A: Absolutely! Coconut oil isn’t just a flavor enhancer; it’s the keto magician binding all the elements in a creamy embrace. Its richness in MCTs and lauric acid elevates both taste and nutritional value.
Q: Can I substitute almond milk with another dairy-free alternative?
A: Certainly! While almond milk adds a delightful touch, feel free to experiment with your favorite dairy-free alternative to tailor the mug cake to your taste preferences like coconut milk.
Q: How do I store the leftover mug cake sandwiches?
A: You can store the leftovers of this keto Oreo mug cake in an airtight container in the refrigerator for up to 3 days. You can reheat them in the microwave for a few seconds before eating. You can also freeze them for up to a month and thaw them in the fridge overnight.
Q: Can I use a sweetener different from Swerve?
A: Yes, you can use any keto-friendly sweetener that measures like sugar, such as erythritol, monk fruit, or allulose. However, make sure to adjust the amount according to the sweetness level of your preferred sweetener.
Q: Can I tweak the sweetness level by adjusting Swerve quantities?
A: Absolutely! Swerve is your sweet companion, and adjusting quantities allows you to customize the sweetness to match your preference. Experiment until it’s just right for you.
Q: Is there a recommended cocoa powder for this recipe?
A: Choose a high-quality cocoa powder for the best chocolatey experience. The better the cocoa, the richer the flavor in your keto Oreo mug cake.
Q: How can I add a personal touch to these mug cake sandwiches?
A: Get creative! Consider adding a sprinkle of unsweetened coconut flakes or a drizzle of sugar-free chocolate syrup for that extra touch of decadence. Make it yours!
Indulge in the answers to your burning questions and make your keto journey even more delightful!
Q: What is the difference between keto Oreo mug cake and keto chocolate mug cake?
A: The main difference is in the texture and the filling. The keto Oreo mug cake has a crumbly cake layer and a creamy filling that resembles the classic Oreo cookie. The keto chocolate mug cake has a moist and smooth cake layer and no filling. Both are delicious and keto-friendly, but the keto Oreo mug cake is more fun and satisfying.
Q: Can I make this mug cake in the oven?
A: Yes, you can bake this mug cake in the oven if you don’t have a microwave or prefer a more traditional method. Preheat your oven to 180°C (350°F) and grease a small oven-safe ramekin. Follow the same steps as the microwave version and bake for 15 to 20 minutes or until a toothpick inserted in the center comes out clean.
Q: Can I add some chocolate chips or nuts to the mug cake?
A: Yes, you can customize your mug cake by adding some sugar-free chocolate chips or chopped nuts of your choice. Just make sure to account for the extra carbs and calories that they will add to the recipe.
Chocolate Keto Oreo Mug Cake With Coconut Flour
Equipment
- 1 Spatula
Ingredients
Keto Mug Cake Batter
- 1/2 tablespoon coconut oil
- 1 large egg
- 1/4 teaspoon Vanilla extract (sugar free)
- 2 tablespoons coconut flour
- 2 tablespoons Swerve see notes
- 1 tablespoon cocoa powder
- 1/2 teaspoon baking powder
- 1 pinch Himalayan salt
Keto Mug Cake Filling
- 1 tablespoon coconut oil
- 1/2 tablespoon almond milk see notes
- 3 tablespoons Swerve powdered
- 1 pinch Himalayan salt
Instructions
- In a small microwave-safe bowl or microwave-safe mug, melt the coconut oil for the mug cake. Add the egg and vanilla extract and whisk well.1/2 tablespoon coconut oil, 1 large egg, 1/4 teaspoon Vanilla extract
- Add the dry ingredients: coconut flour, Swerve, cocoa powder, baking powder and salt, and mix well until you have a smooth keto batter.2 tablespoons coconut flour, 2 tablespoons Swerve, 1 tablespoon cocoa powder, 1 pinch Himalayan salt, 1/2 teaspoon baking powder
- Microwave for 90 seconds or until a toothpick inserted in the center comes out clean. The cooking time will depend on the power of your microwave.
- Let the mug cake cool slightly and then cut it into four round slices.
- In another small microwave-safe bowl, melt the coconut oil for the filling. Add the almond milk, powdered Swerve, and salt and whisk well. You can use a food processor if you prefer.1 tablespoon coconut oil, 1/2 tablespoon almond milk, 3 tablespoons Swerve, 1 pinch Himalayan salt
- Take two slices of the mug cake and spread half of the filling on one slice. Place the other slice on top and press gently to make a sandwich. Repeat with the remaining slices and filling.*
Video Recipe
Notes
- Use a microwave-safe cup for even cooking.
- Substitute almond milk with vegetable oil for a richer filling.
- Add a splash of lemon juice for a slight tang in the filling, enhancing the chocolate flavor.
- Prefer a smoother cake? Use unsweetened cocoa powder for a silkier taste.
- Swap Swerve with a different sweetener like monk fruit.
- For extra indulgence, sprinkle chopped keto Oreo cookies or add a dollop of almond butter on top.