Keto Chocolate Mug Cake (Dessert)

About This Recipe

When chocolate cravings hit, you don’t always have the time or patience to bake a full cake. That’s where the Keto Chocolate Mug Cake comes in — a rich, fluffy, single-serve dessert you can whip up in just minutes using your microwave. It’s the perfect balance of indulgent and practical, giving you all the flavor of a decadent chocolate cake without the carbs or the wait.

This recipe is built on keto pantry staples like almond flour, cocoa powder, egg, and butter, combined with a keto-friendly sweetener to create the right sweetness without sugar. The microwave does all the work, turning a simple batter into a moist, spongy cake in under two minutes. The result is a warm, chocolatey treat that feels like comfort food but keeps you firmly on track with your low-carb lifestyle.

What makes this mug cake especially great is its versatility. You can enjoy it plain, top it with sugar-free whipped cream, drizzle with a little peanut butter, or even add sugar-free chocolate chips to the batter for extra richness. Each variation gives you a slightly different dessert, making this recipe something you’ll want to keep coming back to.

From a keto perspective, it’s perfectly balanced: almond flour keeps carbs low, cocoa adds deep chocolate flavor, and butter or coconut oil provides the fat that helps keep you full. Unlike store-bought low-carb desserts, this one uses simple, clean ingredients you control, so you always know what’s going into your body.

It’s also an excellent choice for portion control. Instead of baking a whole cake (and being tempted to eat half in one sitting), you make a single serving that satisfies the craving and is gone in a few bites. That makes it a smart option for anyone practicing moderation or trying to stay consistent on keto without feeling deprived.

Whether it’s a late-night craving, a quick after-dinner dessert, or even a sweet afternoon snack, this Keto Chocolate Mug Cake is proof that staying low-carb doesn’t mean missing out on indulgence. It’s fast, it’s simple, and it’s everything you want in a chocolate dessert — without the sugar.

Jump to Recipe

Why You’ll Love This Recipe

  • Single-serve dessert ready in minutes

  • Rich chocolate flavor with fluffy texture

  • Low-carb, gluten-free, and sugar-free

  • Easy to customize with mix-ins or toppings

  • Perfect for portion control and quick cravings

Servings: 1 mug cake

Ingredients

  • 3 tbsp almond flour

  • 2 tbsp unsweetened cocoa powder

  • 2 tbsp powdered erythritol or monk fruit sweetener

  • 1 large egg

  • 2 tbsp butter or coconut oil, melted

  • ½ tsp vanilla extract

  • ½ tsp baking powder

  • Pinch of salt

  • Optional: 1 tbsp sugar-free chocolate chips

Instructions

  • In a microwave-safe mug, whisk together almond flour, cocoa powder, sweetener, baking powder, and salt.

  • Add egg, melted butter, and vanilla. Mix until smooth.

  • Stir in chocolate chips if using.

  • Microwave on high for 60–90 seconds until cake is set but still slightly soft in the center.

  • Let cool for 1–2 minutes, then top with whipped cream or your favorite keto topping.

Nutrition (per serving)

  • Calories: ~320

  • Fat: 28g

  • Protein: 10g

  • Net Carbs: 5g

  • Fiber: 4g

FAQ

Can I bake this in the oven instead of microwaving?
Yes — bake at 175°C (350°F) for about 12–15 minutes.

Can I use coconut flour instead of almond flour?
You can, but use only 1 tbsp as coconut flour is more absorbent.

Can I make this dairy-free?
Yes — use coconut oil instead of butter and a dairy-free whipped topping.

Can I meal prep this?
Since it’s a single-serve dessert, it’s best made fresh, but you can pre-mix dry ingredients for quick use.

Variations & Substitutions

  • Add peanut butter or almond butter swirl.

  • Mix in sugar-free chocolate chips or chopped nuts.

  • Top with sugar-free caramel sauce or berries.

Serving Suggestions

  • Top with whipped cream and chocolate shavings.

  • Serve with fresh strawberries for a fruity twist.

  • Pair with a cup of coffee for the ultimate treat.

Recipe Card

Keto Chocolate Mug Cake

Keto Chocolate Mug Cake

A quick and indulgent single-serve keto chocolate mug cake that’s rich, moist, and ready in just a couple of minutes. Perfect for when you’re craving dessert without the carbs!

Yield: 1 mug cake  •  Prep:  •  Cook:  •  Total:

Ingredients

  • 3 tbsp almond flour
  • 2 tbsp unsweetened cocoa powder
  • 2 tbsp powdered erythritol or monk fruit sweetener
  • 1 large egg
  • 2 tbsp butter or coconut oil, melted
  • 1/2 tsp vanilla extract
  • 1/2 tsp baking powder
  • Pinch of salt
  • Optional: 1 tbsp sugar-free chocolate chips

Instructions

  1. In a microwave-safe mug, whisk together almond flour, cocoa powder, sweetener, baking powder, and salt.
  2. Add egg, melted butter, and vanilla. Mix until smooth.
  3. Stir in chocolate chips if using.
  4. Microwave on high for 60–90 seconds until cake is set but still slightly soft in the center.
  5. Let cool for 1–2 minutes, then top with whipped cream or your favorite keto topping.

Nutrition (per serving)

  • Calories: 320
  • Fat: 28 g
  • Protein: 10 g
  • Net Carbs: 5 g
  • Fiber: 4 g

Dessert • Low Carb / Keto • keto mug cake, chocolate mug cake, low carb dessert, quick keto cake

Final Thoughts

Loved this Keto Chocolate Mug Cake? Save the recipe on Pinterest, share it on Instagram, and check out my other keto dessert recipes for more quick and satisfying low-carb treats!

📩 Get 21 Free Keto Recipes straight to your inbox!

📩 Get 21 Free Keto Recipes
straight to your inbox!

Social

Newsletter

Subscribe to our free newsletter and get exclusive keto recipes, tips, and meal ideas delivered straight to your inbox.