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Home » Recipes » Cakes + Tarts

Marshmallow Chocolate Mug Cake (gluten-free)

Aug 18, 2022 · Leave a Comment

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Sometimes you just crave a cake, but don't want to spend all the time and energy making a giant cake, right? That's when this single-serve marshmallow chocolate mug cake comes in handy. It takes about 5 minutes to make and it's made in the microwave!!

Tried this recipe? Please leave a star ⭐️⭐️⭐️⭐️⭐️ rating below and/or a review in the comments section further down the page. You can also stay in touch with me through social media by following me on Instagram, Pinterest, and TikTok or by subscribing to my newsletter.

marshmallow-chocolate-mug-cake-gluten-free

It's a gooey, chocolaty cake filled with a marshmallow center. Think of a lava cake, but with marshmallows instead of chocolate! This mug cake is easily made to be gluten-free, and is the best dessert for one! It's one of my favorite quick cake recipes!

If you're looking for more single-serve desserts, check out my single-serve blueberry crumble.

Jump to:
  • Why You'll Love this Recipe
  • Ingredients
  • How to Make Microwave Mug Cake
  • Ingredient Substitutions
  • Mug Cake Variations
  • Equipment I Use + Love
  • Frequently Asked Questions
  • Top tip
  • Marshmallow Chocolate Mug Cake (gluten-free)

Why You'll Love this Recipe

You'll love this marshmallow chocolate mug cake because it's so easy to make and you likely have all the ingredients already in your pantry! It's done in a snap and there's no oven required for this fudgy chocolate dessert.

Ingredients

This marshmallow mug cake calls for easy ingredients you're sure to have in your pantry.

marshmallow-chocolate-mug-cake-gluten-free-ingredients
  • Gluten-Free Flour: I use King Arthur's Gluten-free Flour in this recipe.
  • Granulated Sugar
  • Baking Powder: I use Bob’s Red Mill.
  • Egg Yolk: don't use the egg white. The single egg yolk will make the cake chewy and moist. Save the egg white for an omelet or meringues.
  • Unsweetened Cocoa Powder
  • Whole Milk: Any milk will work. I prefer whole milk. You can even use water in a pinch.
  • Chocolate Chips: You can use any flavor or variation of chocolate chips like dark chocolate chips. I use large semi-sweet chocolate chips. A chopped chocolate bar will also work here.
  • Marshmallow Fluff: marshmallows can be used instead of marshmallow fluff. I love marshmallow fluff because it gets really gooey after microwaving.
  • Unsalted Butter
  • Salt: I always use Redmond's Real Salt.
  • Water: I add a tablespoon of water on top of the mug cake BEFORE microwaving to keep the cake moist.

See recipe card for quantities.

How to Make Microwave Mug Cake

marshmallow-chocolate-mug-cake-gluten-free-process-shot

Combine egg yolk, sugar, and melted butter in the mug. Stir to combine.

marshmallow-chocolate-mug-cake-gluten-free-process-shot

Add cocoa powder, gluten-free flour, salt, and baking powder. Pour in milk.

marshmallow-chocolate-mug-cake-gluten-free-process-shot

After all the ingredients are combined, add chocolate chips and stir. Press the tablespoon of marshmallow fluff into the center of the chocolate cake batter.

marshmallow-chocolate-mug-cake-gluten-free

Top with 1 tablespoon water and microwave on high for two minutes.

Hint: use a large mug because the cake does rise in the microwave. Find some of my favorite options HERE.

Ingredient Substitutions

  • Butter: you may use vegan butter instead.
  • Milk: dairy-free milk will work instead of whole milk.
  • Marshmallow Fluff: a marshmallow or handful of mini marshmallows will work instead of marshmallow fluff.

Mug Cake Variations

  • Nutty: add a handful of nuts to the batter before microwaving.
  • S'mores: add crushed graham cracker crumbs to the batter.
  • Vanilla Extract: add ¼ teaspoon vanilla extract to the batter.

Find my homemade gluten-free graham cracker recipe HERE for gluten-free graham cracker crumbs.

Equipment I Use + Love

  • Large Mug: necessary for this recipe!
  • Small Spatula: makes mixing easier in the mug.

Frequently Asked Questions

Can I make this mug cake in the oven?

Absolutely! Use an oven-safe dish and bake in the oven at 350 degrees for 10 minutes.

Is this recipe vegan?

It is not, but you can easily make it vegan by using vegan butter, dairy-free milk, and vegan marshmallows. This will make a vegan mug cake.

What mug should I use?

I use a large mug that is microwave-safe.

What is the cooking time? 

It takes two minutes in the microwave to cook this chocolate dessert.

Top tip

make sure to top with water to keep the cake moist.

marshmallow-chocolate-mug-cake-gluten-free

Marshmallow Chocolate Mug Cake (gluten-free)

It's a gooey, chocolaty cake filled with a marshmallow center. Think of a lava cake, but with marshmallows instead of chocolate! This mug cake is easily made to be gluten-free, and is the best dessert for one!
3.25 from 4 votes
Print Recipe Pin Recipe
Prep Time 3 minutes mins
Cook Time 2 minutes mins
Total Time 5 minutes mins
Course Dessert
Cuisine American
Servings 1 person

Equipment

  • Large Mug
  • Small Spatula

Ingredients
  

  • 4 tablespoon gluten-free flour
  • 2 tablespoon granulated sugar
  • ¼ teaspoon baking powder
  • 2 tablespoon cocoa powder
  • 3 tablespoon milk
  • 1 tablespoon chocolate chips
  • 1 tablespoon marshmallow fluff
  • 3 tablespoon unsalted butter
  • ¼ teaspoon salt
  • 1 tablespoon water
  • 1 egg yolk

Instructions
 

  • Combine egg yolk, sugar, and melted butter in the mug. Stir to combine.
  • Add cocoa powder, gluten-free flour, salt, and baking powder. Pour in milk.
  • After all the ingredients are combined, add chocolate chips and stir. Press the tablespoon of marshmallow fluff into the center of the cake.
  • Top with 1 tablespoon water and microwave on high for two minutes.

Notes

make sure to top with water to keep the cake moist.
Keyword gluten free microwave mug cake, marshmallow chocolate mug cake, microwave cake, microwave mug cake, mug cake
Tried this recipe?Let us know how it was!

Tried this recipe? Please leave a star ⭐️⭐️⭐️⭐️⭐️ rating below and/or a review in the comments section further down the page. You can also stay in touch with me through social media by following me on Instagram, Pinterest, and TikTok or by subscribing to my newsletter.

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