Give this low-carb banana mug cake a try if you miss banana baked goods on a low-carb diet. Using extract instead of the fruit, it’s easy to make this tasty banana cake in a mug without all the sugar and carbs typically found in traditional recipes.
This banana nut cake in a mug is 6.3 net carbs, which makes it easy to fit into a keto diet. Enjoy this small yet filling cake with just a few ingredients and about 5 minutes!
Table of Contents
Low-Carb Banana Nut Cake in a Mug
A warm, freshly baked slice of banana nut bread with butter… am I the only one craving that on keto? Well, miss it no more because this tasty treat really hits the spot. Just like the mug coffee cake, this recipe is also delicious for breakfast.
You can easily control the amount of banana flavor in this mug cake. Be sure to read the notes below for important tips on using the extract. Use different nuts if you’d like and even add keto chocolate chips. Just make sure to adjust the macros if you’re closely counting.
Banana Mug Cake Ingredients
Here’s what you need to make this recipe. The exact measurements are in the recipe card below.
- Almond flour
- Coconut flour
- Baking powder
- Keto milk substitute
- Banana extract
How to make keto banana mug cake
In a microwave-safe mug, dish, or ramekin, mix the almond flour, coconut flour, sweetener, baking powder, and cinnamon until well incorporated.
Add the melted butter, milk substitute, lightly beaten egg, and banana extract. Stir until smooth, but do not over mix.
Gently fold in half of the chopped walnuts to the batter and sprinkle the other half on top.
Microwave for one minute and thirty seconds or until the top is opaque and cooked through.
Top with additional walnuts, if desired.
Be sure to serve this cake warm.
Banana Cake in a Mug Recipe Notes and FAQ
How to add the right amount of extract.
Use 1/2 teaspoon of banana extract for a mild banana flavor. Use 1 teaspoon if you like a stronger flavor. After testing with a few different people, this truly is a matter of preference.
Which brand of banana extract should I use?
This recipe uses McCormick banana extract. It was also tested using a candy flavoring and the results were very different. If you choose to use a different brand, please note that you might have to use more or less to get the desired flavor.
Banana nut cake in a mug that's low-carb and ready in minutes. Net carbs for the mug cake using all the nuts: 6.3g
- 2 Tablespoons almond flour
- 1 Tablespoons coconut flour
- 2 Tablespoons Erythritol, granular
- ½ teaspoon baking powder
- ¼ teaspoon cinnamon
- 2 Tablespoons melted butter
- 2 Tablespoons milk of choice
- 1 egg, beaten
- ½ - 1 teaspoon banana extract
- 1 Tablespoon chopped walnuts
- In an 8 ounce mug, mix the almond flour, coconut flour, erythritol, baking powder, and cinnamon until well incorporated.
- Add the melted butter, milk, egg, and banana extract. Stir until smooth.
- Gently fold half the chopped walnuts into the batter and distribute the other half on top.
- Cook in the microwave for one minute and thirty seconds or until the top is opaque and cooked through.
- Top with additional chopped walnuts, if desired and be sure to serve warm.
Use ½ teaspoon of extract for a more mild banana flavor and 1 teaspoon if you want a strong flavor.
You can adjust the level of sweetness by adjusting the erythritol.
This mug cake is best served fresh and warm.
Nutrition facts calculated using Carb Manager and are not guaranteed to be 100% accurate.
As an Amazon Associate and member of other affiliate programs, I earn from qualifying purchases.
Serving Size:1 mug cake
Amount Per Serving: Calories: 559Total Fat: 49.9gSaturated Fat: 19.8gCholesterol: 247.5mgCarbohydrates: 44.7gNet Carbohydrates: 6.3gFiber: 10gSugar: 3.8gSugar Alcohols: 28.4gProtein: 15.9g
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If you try this banana mug cake I’d love to hear your thoughts in the comments below!