Fudgy Keto Brownie Mug Cake (Ready in 2 Mins!)

Snacks

March 11, 2026

The Ultimate 2-Minute Keto Treat

We’ve all been there: a late-night craving for something sweet, decadent, and chocolatey hits hard. When you’re living a keto lifestyle, satisfying that urge can feel like a challenge. Enter the hero of low-carb desserts: the Keto Brownie Mug Cake! This single-serving wonder is rich, fudgy, and ridiculously easy to make. Forget preheating the oven or dealing with a mountain of dishes. All you need is a mug, a microwave, and about two minutes to whip up a warm, gooey brownie that will crush your cravings without kicking you out of ketosis.

Ingredients

• 2 tbsp / 14g unsweetened cocoa powder
• 2 tsp / 5g coconut flour
• 1/2 tsp / 2g baking powder
• 1 1/2 tbsp / 18g Swerve granular sweetener
• 1 1/2 tbsp / 22ml heavy cream
• 1 1/2 tbsp / 22ml water
• 1 tsp / 5ml extra virgin olive oil
• 1 tbsp / 15g chopped dark chocolate (keto-friendly)

Instructions

1. Combine Dry : In a microwave-safe mug (at least 8 oz / 240 ml), add the cocoa powder, coconut flour, baking powder, and Swerve. Use a small whisk or fork to mix thoroughly, breaking up any clumps.2. Add Wet : Pour the heavy cream, water, and olive oil into the mug. Whisk until the batter is completely smooth and well combined.3. Add Chocolate & Cook: Sprinkle the chopped dark chocolate over the surface of the batter. Microwave on full power for 60-80 seconds. For a fudgier center, aim for the lower end of the time range (around 65 seconds).4. Cool and Enjoy: Carefully remove the hot mug from the microwave. Let the brownie cool for a minute or two before digging in. It’s best enjoyed warm!

Nutritional Information

• (Estimated)Serving Size: 1 Mug Cake
• Calories: 285 kcal
• Net Carbs: 5g
• Fat: 25g
• Protein: 6gNote: Nutrition is an estimate and can vary based on the specific brands of used.

Pro Tips

• For an extra gooey, lava-cake-like center, slightly undercook the brownie. Start with 60 seconds and check—the center should still be a little wet.
• Don’t skip the cooling time! Letting it sit for a minute or two allows the brownie to set properly and develop a richer, fudgier texture.
• Elevate your dessert with a dollop of keto-friendly whipped cream, a scoop of low-carb vanilla ice cream, or a few fresh raspberries on top.

FAQ

Q: Can I use a different sweetener for this keto mug cake
A: Yes, you can substitute Swerve with other keto-friendly granular sweeteners like erythritol or a monk fruit blend. Use a 1:1 ratio, but adjust to your personal taste as sweetness levels can vary slightly between brands.

Q: What can I use instead of coconut flour
A: Coconut flour is very absorbent and unique. For the best fudgy texture as intended in this recipe, it is highly recommended. If you must substitute, you can try almond flour, but you will need to use about 3-4 times the amount and may need to adjust the liquid ingredients.

Q: How do I make this keto brownie mug cake dairy-free
A: To make this a dairy-free keto treat, simply substitute the heavy cream with full-fat coconut cream or unsweetened almond milk. Also, ensure you use a dairy-free brand of dark chocolate.

Q: Why did my keto mug cake turn out dry
A: The most common reason for a dry mug cake is overcooking. Microwave power varies, so start with just 60 seconds. The center should still look slightly wet when you take it out, as it will continue to cook and set as it cools, resulting in a perfectly fudgy keto brownie.

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