90-Second Keto Raspberry Mug Cake

Dessert

March 10, 2026

Your Go-To Keto Dessert Fix!

Ever get hit with a sudden craving for something warm, sweet, and cakey, but don’t want to spend an hour baking? This keto raspberry mug cake is your delicious solution! In just 90 seconds, you can whip up a perfectly portioned, low-carb treat that’s bursting with the tangy flavor of raspberries and the rich creaminess of a cream cheese batter. It’s the ultimate guilt-free indulgence to satisfy your sweet tooth in an instant.

Ingredients

• 2 tbsp (28 g) full-fat cream cheese, softened
• 1 tbsp (14 g) butter, melted
• 1 medium egg
• 1 tbsp (12 g) Swerve granulated sweetener
• 2 tbsp (14 g) coconut flour
• 1/4 tsp (1 g) baking powder
• 1 tsp (5 ml) vanilla extract
• 6 frozen raspberries

Instructions

1. Preparation Method
2. In a 12-ounce microwave-safe mug, combine the softened cream cheese and melted butter. Microwave on high for 20 seconds, then whisk until smooth.
3. Whisk in the egg, sweetener, and vanilla extract until the mixture is fully combined and lump-free.
4. Add the coconut flour and baking powder, stirring until just incorporated. Do not overmix.
5. Gently press the six frozen raspberries into the top of the batter.
6. Microwave on high for 80 to 90 seconds. The cake should be puffed and set in the center. Watch it closely after the 1-minute mark to prevent overcooking. Let cool for a minute before serving.

Nutritional Information

• Serving Yields: 1
• Nutritional Facts per Serving
• Net Carbs: 4.5 g
• Total Fats: 27 g
• Protein: 9 g
• Calories: 342

Pro Tips

• Pro-Tips for the Perfect Mug Cake
• For the smoothest batter, ensure your cream cheese and egg are at room temperature before mixing.
• Microwave wattages vary significantly. Check your cake at the 60-second mark to prevent it from becoming dry and rubbery.
• Let the mug cake cool for at least 1-2 minutes before eating. It will be extremely hot and continues to set as it cools.
• Serve with a dollop of sugar-free whipped cream or a sprinkle of cinnamon for an extra touch of decadence.

FAQ

Q: Why is my keto mug cake rubbery
A: A rubbery texture is usually a sign of overcooking. Microwave wattages vary, so it’s best to check your cake at the 60-second mark and cook only until it’s puffed and set in the center. Letting it cool for a minute also helps it set properly.

Q: Can I use almond flour instead of coconut flour
A: This recipe was specifically developed with coconut flour, which is highly absorbent. Substituting with almond flour is not recommended as it requires different liquid ratios and will significantly alter the cake’s texture.

Q: Can I use fresh raspberries instead of frozen
A: Yes, you can use fresh raspberries. However, frozen raspberries are recommended as they hold their shape better and release less moisture during the quick cooking process, preventing the cake from becoming too soggy.

Q: How do I get the smoothest batter for this mug cake
A: For the smoothest, lump-free batter, ensure your cream cheese and egg are at room temperature before you begin mixing. This helps all the ingredients combine easily and evenly.

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