Here’s a low-carb apple mug cake recipe so you don’t feel left out once all those fall apple goodies start popping up everywhere. Similar to pumpkin, apple baked goods are another autumn staple that don’t have to be completely taboo if you’re watching your carbs.
Although apples are far from keto friendly, there are only two tablespoons in this recipe. At 10.7 net carbs, it’s possible to “fit” this tasty treat into your macros for the day.

Apple Cinnamon Cake in a Mug
There seems to be a great debate about the best fall desserts. Are you team pumpkin or team apple? Personally, I’d go for either, but find pumpkin more tempting. Since I know how wrecked I feel after traditional sugary treats, I’ll happily enjoy a pumpkin mug cake.
Not to discriminate whatsoever, this apple mug cake is also on my low-carb dessert roster. That little bit of granny smith apple packs a huge flavor! The tiny cake is filling, flavorful, and really hits the spot when you’re missing the flavors of the season.

Low-Carb Apple Mug Cake Ingredients
Here’s what you need to make this recipe. The exact measurements are in the recipe card below.
- Almond flour
- Keto sweetener
- Baking powder
- Cinnamon
- Butter
- Low-carb milk substitute
- Egg
- Vanilla extract
- Apple
- Whipped cream for an optional topping
Steps to Make Low-Carb Apple Cinnamon Mug Cake
Grate two tablespoons of apple and set aside. Use a large size grate.

In a microwave-safe mug, dish, or ramekin that’s at least 8 ounces, mix the almond flour, sweetener, baking powder, and cinnamon until fully combined.

Add the melted butter, milk substitute, lightly beaten egg, and vanilla extract and stir until fully incorporated.

Gently fold in the shredded apple.

Microwave for one minute and thirty seconds or until the center of the mug cake is cooked through.

Top with keto whipped cream and additional cinnamon if you choose and serve immediately.

Low-Carb Apple Mug Cake Recipe Notes and FAQ
What kind of grater should I use?
When grating the apple, use the largest size grate.

What kind of apples should I use?
This recipe uses a granny smith apple. The tart flavor works best in this microwave apple cake.

Can I make this ahead of time?
This mug cake is best served fresh and warm. It’s not recommended making it ahead of time.

Can I eat apples on a keto diet?
Apples are not recommended on a keto diet. There are only two tablespoons of shredded apple in this recipe, but check your macros for the day to see if you can fit in the 10.7 net carbs in this mug cake.
More Fall Cakes
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Please let me know if you try this low-carb apple mug cake! I’d love to hear your thoughts in the comments below.
