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Spooky Keto Chocolate Mug Cake

4.8 stars, average of 17 ratings

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These Spooky Chocolate Mug Cakes are the perfect keto treat for Halloween, especially if you can involve the kids in the decorating process!

Just like all keto mug cakes, they are quick and easy to make. It will only take a few minutes, and you never have to worry about cake leftovers to freeze.

I wasn't able to find sugar-free edible eyes for decorating the mug cakes so I used regular sugar-based eyes and took them off just before eating.

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Recipe Tips

Can't have dairy? If you need to make this mug cake dairy-free, simply use coconut cream instead of the cream cheese and whipping cream to make the frosting.

Keep in mind that this keto recipe makes a generous mug cake that will be great for breakfast but may be too much if eaten as an after dinner dessert. Feel free to make smaller mug cakes, or serve just half mug cake if the whole serving is too much for you. Instead of mug cakes, your could make 4 to 6 small muffins. A silicon muffin tray like this one can even be used in a microwave.

If you don't have a microwave, I suggest you double or triple the recipe. Preheat the oven to 175 °C/ 350 °F (fan assisted), or 195 °C/ 380 °F (conventional) and cook for about 15 minutes or until cooked in the centre. The time will depend on the size of each muffin.

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Hands-on Overall

Serving size 1 mug cake

Allergy information for Spooky Keto Chocolate Mug Cake

✔  Gluten free
✔  Nightshade free
✔  Pork free
✔  Avocado free
✔  Fish free
✔  Shellfish free
✔  Beef free

Nutritional values (per serving, 1 mug cake)

Net carbs5.2 grams
Protein13.7 grams
Fat25.3 grams
Calories303 kcal
Calories from carbs 7%, protein 18%, fat 75%
Total carbs10.6 gramsFiber5.4 gramsSugars2.6 gramsSaturated fat10 gramsSodium288 mg(13% RDA)Magnesium320 mg(80% RDA)Potassium1,034 mg(52% EMR)

Ingredients (makes 2 mug cakes)

Mug Cakes:


  1. In a bowl beat the eggs with sweetener. Add the almond flour, Dutch process cocoa powder, black cocoa powder (or more Dutch process), coconut flour, baking powder and a pinch of salt. Spooky Keto Chocolate Mug Cake
  2. Beat until well combined. Spooky Keto Chocolate Mug Cake
  3. Divide the batter between two wide mugs or coffee cups and microwave on high for 90 seconds, or longer until cooked through in the middle. If still raw in the middle, add another 30 to 60 seconds to the cooking time. Let the mug cakes cool down completely before frosting. (For oven baking instructions, check the recipe tips above.) Spooky Keto Chocolate Mug Cake
  4. While they are cooling down, prepare the frosting. Place the cream cheese, cream and vanilla in a bowl. Using a baloon whisk, beat until stiff peaks form.
  5. Place the frosting in a piping bag and pipe on top to create a mummy effect, or simply use a spoon and spread on top of each mug cake. Optionally, pipe two small dots of frosting and add edible eyes to decorate the mug cakes (if you can't get sugar-free, you can take them off before eating).
  6. Enjoy immediately or store in the fridge for up to 3 days.
    Spooky Keto Chocolate Mug Cake

Ingredient nutritional breakdown (per serving, 1 mug cake)

Net carbsProteinFatCalories
Egg, whole, fresh, raw (free-range or organic eggs)
0.4 g6.3 g4.8 g72 kcal
Almond flour (blanched ground almonds, almond meal)
1.5 g3.6 g8.8 g98 kcal
Coconut flour, organic
0.6 g1 g0.9 g22 kcal
Cocoa powder, raw (cacao)
0.6 g0.5 g0.4 g6 kcal
Cocoa powder, intense deep black, Van Houten
1 g0.9 g0.6 g10 kcal
Baking powder, gluten-free
0.1 g0 g0 g1 kcal
Salt, sea salt
0 g0 g0 g0 kcal
Cream cheese, soft (full-fat)
0.5 g1.1 g4.2 g37 kcal
Cream, heavy whipping, pouring, full-fat (30-40% fat)
0.4 g0.3 g5.7 g55 kcal
Erythritol (natural low-carb sweetener)
0.3 g0 g0 g1 kcal
Vanilla extract, sugar-free, alcohol-based
0 g0 g0 g1 kcal
Total per serving, 1 mug cake
5.2 g13.7 g25.3 g303 kcal

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Martina Slajerova
Creator of

Martina Slajerova

I changed the way I ate in 2011, when I was diagnosed with Hashimoto’s, an autoimmune disease that affects the thyroid. I had no energy, and I found it more and more difficult to maintain a healthy weight.

That’s when I decided to quit sugar, grains, and processed foods, and to start following a whole-foods-based ketogenic approach to food.

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