Keto Cinnamon Mug Cake Recipe

If you’re craving something sweet yet sticking to your keto plan, this Keto Cinnamon Mug Cake is the perfect fix. Made with wholesome ingredients like almond flour, coconut flour, and cinnamon, this low-carb dessert delivers all the warmth and comfort of a cinnamon roll in a single mug.

The best part? It’s ready in just about five minutes — no oven required! This recipe uses a microwave for quick preparation, making it ideal for busy mornings or a late-night craving.

1. Keto Cinnamon Mug Cake Recipe (Yield: 1 Serving)

Ingredients

• 1 tablespoon butter, very soft
• 1/4 cup almond flour
• 1 egg
• 1 tablespoon coconut flour
• 1 tablespoon plain yogurt (or sour cream)
• 1 tablespoon Joy Filled Eats Sweetener (or any keto sweetener of your choice)
• 1/2 teaspoon cinnamon
• 1/4 teaspoon baking powder
• 1/4 teaspoon vanilla extract
• Tiny pinch of salt

Equipment

• Microwave-safe mug (10–12 oz capacity)
• Small mixing bowl
• Fork or whisk
• Measuring spoons

Instructions

Prepare the Mug:

Lightly grease a microwave-safe mug with a small amount of butter or nonstick spray to prevent sticking. This also makes it easier to remove the cake once cooked.

Mix Wet Ingredients:

In a small bowl, add the soft butter, egg, plain yogurt (or sour cream), vanilla extract, and Joy Filled Eats Sweetener. Whisk together until the mixture becomes smooth and creamy. Make sure your butter is very soft or partially melted — this helps create a smooth batter without lumps.

Combine Dry Ingredients:

Add the almond flour, coconut flour, baking powder, cinnamon, and a tiny pinch of salt to the wet mixture. Stir thoroughly until all ingredients are well incorporated. The batter should be thick but pourable. If it’s too thick, add a few drops of water or unsweetened almond milk to loosen it slightly.

Transfer to Mug:

Pour or spoon the batter into your prepared mug, leaving about an inch of space at the top to allow the cake to rise while cooking.

Microwave the Cake:

Place the mug in the microwave and cook on high for 60 to 90 seconds. Cooking time may vary depending on your microwave’s wattage. Start with 60 seconds and check the texture; if it’s still a bit wet in the center, continue microwaving in 10-second increments until fully cooked. The cake should rise, appear firm, and pull slightly away from the sides of the mug.

Cool and Serve:

Allow the mug cake to cool for 1–2 minutes before enjoying. You can eat it directly from the mug or gently remove it onto a plate.

For an extra treat, top your Keto Cinnamon Mug Cake with a small dollop of whipped cream, a drizzle of sugar-free syrup, or a sprinkle of extra cinnamon for added flavor.

2. Tips for Perfect Keto Cinnamon Mug Cake

The beauty of a mug cake lies in its simplicity, but a few thoughtful steps can make your dessert go from good to absolutely perfect.

Use finely ground almond flour for the best texture — coarse almond meal can make the cake grainy. Similarly, make sure your coconut flour is fresh, as it can absorb moisture quickly and change the consistency of your batter.

When it comes to the butter, ensure it’s soft enough to blend smoothly with the other wet ingredients. Cold butter won’t mix well, and melted butter can sometimes make the cake too greasy.

Microwave time is crucial; overcooking will result in a dry, rubbery texture. Always start with less time and add more in small increments if needed. The ideal mug cake should be soft, moist, and fluffy inside.

You can easily customize your mug cake by adding a tablespoon of chopped pecans or walnuts for extra crunch or a few sugar-free chocolate chips for a sweet twist. For an even richer flavor, replace the vanilla extract with a touch of maple extract or add a pinch of nutmeg.

Lastly, let your mug cake rest for a minute or two after microwaving. This short wait allows the steam to finish cooking the inside gently, creating a perfect texture throughout.

3. Frequently Asked Questions

Can I bake this mug cake in an oven instead of a microwave?

Yes, you can. Simply preheat your oven to 350°F (175°C) and pour the batter into an oven-safe ramekin. Bake for about 10–12 minutes or until the top is firm and a toothpick inserted in the center comes out clean.

Can I substitute almond flour with coconut flour?

It’s best not to replace almond flour entirely with coconut flour, as they absorb liquids differently. However, if you must, use only 1 tablespoon of coconut flour for every 1/4 cup of almond flour, and increase the wet ingredients slightly to maintain the right texture.

What kind of sweetener works best for this recipe?

Joy Filled Eats Sweetener is a great choice, but any keto-friendly sweetener such as erythritol, monk fruit blend, or allulose can be used. Keep in mind that some sweeteners are sweeter than others, so adjust the amount to your taste.

Why is my mug cake dry or rubbery?

This usually happens if the cake is overcooked. Microwaves vary in strength, so cooking times may differ. Try reducing the microwave time by 10–15 seconds or adding a bit more yogurt for moisture next time.

Can I make this ahead of time?

Yes, you can mix the dry ingredients ahead of time and store them in a small jar. When ready to make the mug cake, just add the wet ingredients, stir, and microwave — a perfect quick treat for busy days.

Is this Keto Cinnamon Mug Cake gluten-free?

Absolutely! Since this recipe uses almond and coconut flour, it’s naturally gluten-free and fits perfectly into a low-carb, grain-free diet.

4. Nutrition Information

This Keto Cinnamon Mug Cake is proof that you don’t have to sacrifice flavor or comfort to stay in ketosis. With a delightful aroma, soft texture, and perfectly balanced sweetness, it’s an instant favorite for anyone craving a quick, low-carb dessert. In just minutes, you can enjoy a warm, freshly baked treat — no oven, no guilt, and no effort required.