Keto Coffee Mug Cake (Paleo, Vegan)

This single-serving coffee cake mug cake recipe is a healthy way to satisfy your sweet tooth in just one minute! Fluffy on the inside and topped with an easy streusel, it’s low carb, keto friendly and comes with an eggless vegan option!

Healthy Coffee Cake Mug Cake made eggless and vegan!

Healthy Coffee Cake Mug Cake

I’m all about healthy single-serving desserts, especially if they are quick and easy. Mug cakes are one of my favorites, like this blueberry mug muffin, mug brownie, and vanilla cake.

After sampling the delicious classic coffee cake from Starbucks, I wanted to recreate it and give it a single serving treatment.

The classic coffee cake was fluffy on the inside, tender on the outside and topped with a delicious streusel topping. It had hints of cinnamon and vanilla, and was instantly one of my favorites!

Saying this coffee mug cake is easy is an understatement. It literally takes 1-2 minutes in the microwave, and comes with instructions to make in the oven! 

You’ll notice that the ingredients contain NO coffee, even though it has coffee in its name. Traditionally, coffee cakes don’t contain any coffee in it. It gets its name from being a cake served with coffee! 

Healthy 1 Minute Keto Classic Coffee Cake

How to make a coffee mug cake

Step 1: Lightly grease a small, microwave-safe bowl or ramekin.

Step 2: In a small bowl, add your streusel ingredients and mix well, until combined. 

Step 3: Add your dry ingredients and mix well. Add your egg and milk of choice, and mix until a smooth batter remains. If the batter is too thick, add extra milk.

Step 4: Top the mug cake with the streusel topping and microwave for 1-2 minutes, or until cooked.

Step 5: Allow cooling for 1-2 minutes, before enjoying! 

How to make this coffee cake vegan and eggless

To make this coffee mug cake eggless and vegan-friendly, replace the egg with either a flax egg (ground flaxseed mixed with water) or unsweetened applesauce.

Be wary that if you choose to make it eggless, it will be gooier than cake-like, and will not rise. 

How to make a coffee cake in the microwave or oven

The quickest option is to make the coffee cake in the microwave. However, not everyone has a microwave so this mug cake can be made in the oven.

Simply replace the microwave-safe bowl with an oven-safe ramekin or similar. Bake at 180C/350F for 10-12 minutes, or until a skewer comes out clean.

Tips and Tricks for the Perfect 1-minute coffee mug cake

Microwaves differ based on make and model. Start with microwaving it at one minute, and if it is not cooked, continue microwaving it in 20-second spurts until it is done. 

Use a microwave-safe cereal bowl or shallow container instead of a mug. This will ensure the cake is fully cooked through.

Do not omit the coconut flour or try to substitute it. It is key to include it to ensure the mug cake is fluffy and tender on the outside.

As all coconut flour brands differ, you may need more than half a cup of milk (the suggested amount). Continue adding more milk to the batter, until it is smooth and thick. 

I used blanched almond flour, but you can also use finely milled almond flour and almond meal.

Any granulated sweetener of choice will work. I used monk fruit sweetener, as it is keto approved and contains zero calories and zero sugar. 

To reduce the fat and calories, you can use an egg white instead of a whole egg. 

Easy single serving coffee cake made in the microwave

More healthy mug cake recipes


1 minute coffee cake in a mug

Keto coffee cake mug cake

A healthy 1-minute coffee cake in a mug made with no grains and no sugar! Fluffy on the inside, tender on the outside, it's the perfect single serving dessert that is paleo, vegan and gluten-free.
5 from 5 votes
Print Pin Rate
Course: Dessert
Cuisine: American
Keyword: coffee cake, mug cake, single serving
Prep Time: 1 minute
Cook Time: 1 minute
Total Time: 2 minutes
Servings: 1 mug cake
Calories: 267kcal
Author: Arman


For the classic coffee cake

For the optional streusel topping


For the microwave version

  • In a small bowl, combine the dry ingredients and mix well.
  • In a separate small bowl, combine the almond extract, dairy free milk and the egg (or egg substitute) and whisk lightly. Add the mixture to the dry mixture and mix until just combined.
  • Prepare the streusel topping. In a small bowl, combine the almond flour with the cinnamon and palm sugar and mix well. Add the almond butter and mix well until a thick, crumbly mixture is produced. Add a dash of dairy free milk if desired.
  • Grease a microwave-safe bowl or ramekin and pour the batter in it. Top with streusel and microwave for 1-2 minutes, or until cooked through. 

For the oven version

  • Preheat the oven to 180C/350F. Grease a large ramekin and set aside.
  • Follow directions as above and once ready, bake in the oven for 10-12 minutes, until a toothpick comes out clean.


* Start with 2 tablespoons of milk then adjust accordingly. If the batter is too thick, add more.
Keto coffee cake mug cake should be eaten fresh, and enjoyed warm. 


Serving: 1serving | Calories: 267kcal | Carbohydrates: 8g | Protein: 10g | Fat: 19g | Fiber: 4g | Vitamin A: 3% | Vitamin C: 2% | Calcium: 4% | Iron: 5%


healthy single serving coffee cake in a mug. Paleo, keto and vegan

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90 thoughts on “Keto Coffee Mug Cake (Paleo, Vegan)

  1. Yummy! Do you know how shocked I was to find out that coffee cake doesn’t taste like coffee? At first I was disappointed, but then I realized it was another excuse to drink coffee. I’ll take it!

  2. Coffee cake is one of my all-time favorites! I surprisingly haven’t tried the Starbucks version, but I’ll gladly nom-nom this 1-minute version anytime. And Starbucks in the airport is the best thing ever!! (In fact, it’s the only time I ever get Starbucks.) Also, have you noticed that rediculous outrage over Starbuck’s holiday cups this year? Talk about a #FirstWorldProblem!

  3. You’re totally obsessed with Starbucks, but I don’t mind because I kind of am too. I do love a good coffee cake! Our on-campus coffee shop only serves the Starbucks coffee, so all of the baked goodies are made in-house. They just created a whole grain croissant that’s possibly one of the best things I’ve ever had, so I’ve been having my Americano with that lately.

  4. The only Starbucks cake/dessert I appreciate is their Nutella-stuffed cookies. Have you tried one? Do they even sell them there? Please recreate that!!! They are addictive.

  5. Thanks to you Arman, I never have to spend $$ at Starbucks 🙂 I like my coffee best with a scone. I am addicted to them recently (as long as they have ‘chips’ in them, chocolate, cinnamon, white chocolate…) I like using ramikins for my microwaveable creations. Most of my mugs are too big for these cakes and they make the cake look like it’s for a baby

  6. I am looking for an amazing pumpkin custard that is paleo.. (that I can eat instead of pumpkin pie) Do you have any recipes of this kind? I love your ideas, you are so creative. Thank you so much.

  7. Well who needs Starbucks when we have your blog?!! 🙂 Lazy days do prevail sometimes though. But seriously, you are going to do me in with all this deliciousness! Wait, I forgot this is healthy…I’ll take two!

  8. Don’t fight it. Just embrace it and let the Starbucks fetish lull you!
    Coffee with….. anything I guess. As long as coffee is involved I am all set 😉

  9. Wait, does coffee cake not have any coffee in it? Gah I must sounds so lame but coffee cake in the UK always has coffee in it! Not that this needs it, it sounds amazing and the idea of having the perfect cake to go with coffee sounds perfect!
    Then again most Brits are obsessed with tea… And we do have tea cakes… That are more like English muffins than cake… We sure like to confuse people!

  10. I made these for my siblings with oat flour and stevia and they loved it! I topped them with homemade carmel sauce. I love that you have so many gluten and sugar free recipes. It makers it much easier to be on such a diet. They are so easy and yummy! Thanks!

  11. I know this defeats the purpose of your healthy version, but…will this same recipe work with all purpose flour and regular milk?

  12. How much coffee do you put in your cake,and what kind. You haven’t put anything about coffee.

  13. Let me tell you something. I have made at least half the recipes on your site and I frickin LOVE every single one of them. I am a body building(bikini division) and I’m all about the healthy, low sugar, low carb, low cal snacks that satisfy the sweet tooth. And damn these recipes deliver! Even my husband (who is NOT a fan of healthy foods or protein powder) is crazy about these. You KICK ASS!!!

  14. Hi ! Can I use oat flour instead of almond / coconut flour ? I am in a calorie – restricted diet abs those are off limits for me at this time. Thanks

  15. typical of someone with a raging sweet craving, I misread the recipe and used vegan butter not almond butter in the streusel topping, so I’ve got some strange frosting/cake batter stuff on the top – still takes good though!

  16. Thank you for this amazing recipe! I had it for dinner with keto cream cheese frosting instead of the crumble and just loved it!

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