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Meal Type ยป Desserts ยป Gluten Free S’mores Mug Cake

Gluten Free S’mores Mug Cake

Claire Cary

By

Claire Cary

5 from 5 votes
November 1, 2022
Jump to Recipe

This gluten free chocolate mug cake is naturally vegan and ready to eat in about 5 minutes! With fluffy marshmallows, lots of chocolate chips and graham crackers, this s’mores cake is the ultimate dessert for two!

gluten free chocolate mug cake with marshmallows

I am obsessed with s’mores everything and this gluten free mug cake never fails to hit the spot.

This recipe makes one mug cake, but I think it’s the perfect amount for two. But then again I have definitely eaten a whole one to myself and will fully support you if you want to do the same.

The flavors for this recipe were inspired by my chocolate marshmallow cookies from my ebook! We’ll start with a chocolate cake base, add in some crushed gluten free graham crackers, marshmallows and lots of chocolate chips.

Under 90 seconds in the microwave and you’ll have a downright decadent dessert that will make you swoon. It’s gluten free, contains no egg, no dairy and no refined sugar if you please!

If you love this recipe, try my protein mug cake next!

ingredients in bowls

Key ingredients

FLOUR. You will need both gluten free all purpose flour and blanched almond flour for this recipe. Using both creates the best texture since this is a vegan recipe as well as gluten free!

COCOA. Since this is a chocolate mug cake, you will need some cocoa powder!

SUGAR. You can really use any kind of granulated sugar here, I used light brown but white, coconut or dark brown all work. For a more keto friendly version, you can use a 1:1 monk fruit style sweetener.

MILK. I used almond milk, but any kind of milk works, whether dairy or non dairy.

OIL. The oil will give a more rich texture. Any kind works such as canola, avocado or olive.

CHOCOLATE. Chocolate chips, crushed graham crackers and marshmallows will gives this a s’mores flavor!

two images showing how to make the batter

How to make a gluten free mug cake

In a medium sized mug (at least 11 ounces), whisk together all dry ingredients. Be sure not to pack in the flour, just scoop it lightly.

Whisk in the wet ingredients, but leave out the marshmallows and chocolate chips for now.

Whisk in 1 tbsp of chocolate chips. Take one of the marshmallows and cut it into 4 smaller pieces. Whisk in the chocolate chips and marshmallows so they are well combined with the rest of the ingredients.

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Microwave on high for 60 seconds, then add the large marshmallow on top (as is, no need to break it up), and microwave for 20 more seconds. Let sit for about 2-3 minutes before eating.

Oven Instructions

While this gluten free mug cake is meant to be made in the microwave, you can definitely make it in the oven too! Just be sure to use an oven safe mug.

To do so, first preheat the oven to 350, then follow all directions as usual, but instead of microwaving, bake for about 15-22 minutes or until set.

You can add the marshmallow on top right from the get-go, no need to wait!

When it’s done, take it out of the oven and let it sit for about 5 minutes before digging in.

Up close shot of the gluten free mug cake with marshmallows.

Does it keep?

Mug cakes are definitely best served fresh, but it will keep in the fridge for about 24 hours if you happen to have leftovers.

You can eat it cold or reheat it in the microwave for 15 seconds before enjoying. It will likely be a bit drier than it is fresh, but still delicious!

overhead shot of the mug cake with melted chocolate

Tips & variations

MAKE IT VEGAN! This recipe is already vegan, so no need to do anything special to make it vegan! Just be sure to use marshmallows that do not contain gelatin. I suggest the brand Dandies.

FLOUR. THIS recipe calls for gluten free all purpose flour and almond flour, which together yield a really nice texture.

For all purpose, I am loyal to Bob’s Red Mill 1:1 Baking Flour. You can try another brand, just make sure it has xanthan gum! If you are not gluten free, just use regular all purpose flour, plus the almond flour.

THE BEST MUG. The mug I used was 12 ounces. I recommend one that is at least 10 so it doesn’t all spill over and create a mess.

one gluten free mug cake with graham crackers and marshmallows

You’ll also love…

  • S’mores Cookies
  • S’mores Bars
  • Vegan Chocolate Mug Cake
  • Vegan Brownies

Lastly, if you want more recipes straight to your inbox, be sure to subscribe to my email list. As always, if you make this recipe, leave a comment below so I can see your creation!

5 from 5 votes

Gluten Free Chocolate S’mores Mug Cake

by: claire cary

This gluten free mug cake is naturally vegan and ready to eat in about 5 minutes! With fluffy marshmallows, lots of chocolate chips and graham crackers, this s’mores cake is the ultimate dessert for two!
/ /
Prep: 5 minutes mins
Cook: 2 minutes mins
Total: 7 minutes mins
2

Ingredients

Dry

  • ¼ cup gluten free all purpose flour
  • 2 tbsp blanched almond flour
  • 2 tbsp cocoa powder
  • 2 tbsp GF graham cracker crumbs* I like the brand Schar
  • ¼ tsp baking powder
  • pinch of salt

Wet

  • ¼ cup milk
  • 2 tbsp oil
  • ½ tsp vanilla
  • 3 tbsp light brown sugar can sub coconut sugar
  • 2 tbsp chocolate chips divided
  • 1 ½ large marshmallows
US Customary – Metric

Instructions

  • In a medium sized mug (at least 11 ounces), whisk together all dry ingredients. Be sure not to pack in the flour, just scoop it lightly.
  • Whisk in the wet ingredients, but leave out the marshmallows and chocolate chips for now.
  • Whisk in 1 tbsp of chocolate chips. Take half of the large marshmallow and cut it into 3-4 smaller pieces.
  • Whisk in the chocolate chips and marshmallows so they are well combined with the rest of the ingredients.
  • Microwave on high for 60 seconds, then add the other large marshmallow on top (as is, no need to break it up), and microwave for 20 more seconds.
  • Let sit for about 3 minutes before eating.

Notes

You can make this recipe a simple chocolate mug cake by leaving out the marshmallows and graham cracker crumbs. Follow the rest of the recipe as usual!
I don’t actually buy gluten free graham cracker crumbs, just graham crackers that I then crush up into fine pieces. I have tried various GF graham crackers, and personally think the brand Schar makes the best ones, which they call Honey Grahams. Highly recommend those if you can find them!
If you are not gluten free, just sub the all purpose flour for regular AP flour, but still keep the almond flour.
Serving: 0.5mug cake / Calories: 298kcal / Carbohydrates: 41g / Protein: 6g / Fat: 23g / Fiber: 4g / Sugar: 23g

Did you make this?

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Related posts:

  1. Vegan Gluten Free Chocolate Cupcakes
  2. Vegan Gluten Free Chocolate Cake
  3. Almond Flour Blondies
  4. Vegan Gluten Free Chocolate Donuts
5 from 5 votes (4 ratings without comment)

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Comments

  1. Kate Stephens
    March 1, 2026

    Just wanted something sweet after dinner and this was perfect! Highly recommend!5 stars

    Reply
    1. Claire Cary
      March 2, 2026

      Love it! Thanks, Kate!

      Reply
  2. Morgan
    August 14, 2021

    This was so delicious and so easy to make! Cut the recipe in half and it turned out beautifully.

    Reply
claire cary

Welcome,
I’m Claire

Eat With Clarity is a place for gluten free recipes that are just as good as the real thing. With plenty of vegan, vegetarian and paleo options, there is something here for everyone!


Read Claire’s Story

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