5-Minute Keto Brownie Mug Cake (Single Serving)

Dessert

March 9, 2026

That late-night chocolate craving hits hard, doesn’t it? But who wants to bake a whole pan of brownies? Enter your new secret weapon: the 5-Minute Keto Brownie Mug Cake. It’s rich, fudgy, and ridiculously easy, delivering that decadent chocolate fix without the sugar crash or the messy kitchen. This single-serving wonder is about to become your go-to for instant dessert gratification.

Ingredients

• 1 tbsp / 16g creamy almond butter
• 1 tbsp / 15g beaten egg white
• 1 tsp / 2.5g unsweetened cocoa powder
• ⅛ tsp / 0.6ml vanilla extract
• 3 drops liquid sucralose or stevia, or to taste
• 1 pinch baking soda
• 1 pinch salt
• Optional: chopped almonds or pecans, a drop of orange or lemon extract

Instructions

1. Directions
2. In a small bowl, whisk the egg white until it becomes light and frothy.
3. In a separate microwave-safe mug or ramekin, add the almond butter, cocoa powder, vanilla, sweetener, baking soda, and salt. Pour in the frothed egg white and stir until the batter is smooth and well combined.
4. Microwave on high for 40 to 50 seconds. The brownie will puff up significantly but will settle as it cools. Check for doneness—it should be firm on the edges but slightly molten in the center.
5. Let it cool for at least one minute before diving in, as it will be extremely hot.

Nutritional Information

• Nutritional Info (Estimated)
• Calories: 109
• Fat: 9g
• Net Carbs: 2g
• Protein: 6g

Pro Tips

• For a fudgier, more molten center, microwave for just 40 seconds. For a more cake-like brownie, go closer to 50 seconds.
• Gently fold in a teaspoon of sugar-free chocolate chips or chopped nuts before microwaving for extra texture and flavor.
• Serve immediately with a dollop of whipped cream, a scoop of low-carb ice cream, or a drizzle of melted almond butter.
• Use a wider, shallower mug or ramekin. This helps the brownie cook more evenly and prevents the center from being undercooked.

FAQ

Q: How do I make this keto brownie mug cake extra fudgy
A: For a perfectly fudgy and molten center, microwave your keto brownie mug cake for just 40 seconds. For a more cake-like texture, cook it closer to 50 seconds. Using a wider mug also helps it cook more evenly.

Q: Can I use a different nut butter in this recipe
A: Yes, you can substitute the almond butter with another creamy, low-carb nut butter like peanut butter or cashew butter. For a nut-free version, sunflower seed butter is a great option. Keep in mind this will slightly change the nutritional values.

Q: Is this keto brownie mug cake gluten-free
A: Absolutely. All the ingredients used in this recipe, such as almond butter and cocoa powder, are naturally gluten-free, making this a safe and delicious single-serving dessert for anyone following a gluten-free diet.

Q: What can I add to this keto mug brownie for more flavor
A: To enhance your keto brownie, try folding in a teaspoon of sugar-free chocolate chips or chopped nuts like pecans before microwaving. You can also add a drop of orange or lemon extract for a unique flavor twist.

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