This oat flour mug cake made with tahini and chocolate chips is tasty proof that you can have your cake and feel good about it, too! Rich, chocolatey, and oh so decadent, it’s made with wholesome, simple ingredients and is vegan and gluten-free to boot — but you’d never guess it from the taste!

A mug filled with chocolate chip cookie dough and a spoon inside, perched on a wooden surface sprinkled with scattered chocolate chips, offers the allure of an oat flour mug cake waiting to be devoured.

A Note From Kristen

If you’re like me, sometimes you’re craving something sweet to dig into right now – no long baking times, no pan, mixer, or blender, and most importantly, no mess! That’s where this gluten-free mug cake swoops in to save the day. It’s rich, chocolatey, and the tahini gives it this warm, slightly nutty flavor that makes it feel a little extra (in the best way). Ready in under two minutes and eaten straight from the mug. It’s cozy, quick, and absolutely delicious. Enjoy!
~Kristen

A spoon holds a portion of oat flour mug cake with chocolate chips above a white ceramic mug on a wooden surface.

Ingredient Notes

Please keep in mind that this is just a quick overview. Visit the full recipe for amounts and instructions!

Oat Flour: The main dry ingredient of this oat flour mug cake that gives it structure and binds all the ingredients together without the gluten.
Use certified gluten-free oat flour if necessary.
Baking Powder: Acts as a leavening agent, helping this gluten-free mug cake rise and giving it a fluffy texture.
Salt: Deepens the flavors of the ingredients and keeps the mug cake from tasting flat or too sweet.
Tahini: Imparts moisture, richness, and a super nutty flavor to the recipe. It also sneaks vitamins, minerals, and healthy fats into the mug cake, so you don’t feel guilty about indulging!
Maple Syrup: Gives the oat flour mug cake the perfect sweet, caramel-like flavor. If you are not vegan, honey works great as well.
Milk of Choice: Hydrates the dry ingredients to create a smooth batter so the recipe doesn’t come out dry or crumbly, even without eggs.
I like to use oat milk when making this gluten-free mug cake, but you can also use regular milk or other types of dairy-free milk like almond milk or soy milk.
Chocolate Chips of Choice: Add rich, sweet, gooey chocolate pockets that make the mug cake taste more delicious. I like to use mini dark chocolate chips but any fancy will work!

A spoonful of chocolate chip cookie dough made with oat flour mug cake mix rests on a wooden surface, with a jar of more dough and scattered chocolate chips nearby.

How to Make Oat Flour Mug Cake

01

ADD

Add the dry ingredients to a standard coffee mug and mix. Add the wet ingredients.

A wooden surface holds a bowl of oat flour and a liquid mixture, possibly water or oil, ready to transform into a delightful mug cake.

02

MIX

Mix until a smooth batter forms.

A white mug containing a thick, brown oat flour batter with a spoon inside, placed on a wooden surface.

03

FOLD

Stir in the chocolate chips.

A bowl of cookie dough mixed with chocolate chips sits on a wooden surface, evoking the cozy simplicity of an oat flour mug cake.

04

BAKE

Microwave for 1 minute 40 seconds.

A delightful oat flour mug cake with chocolate chip cookie dough, nestled in a beige mug on a wooden surface.

05

SERVE

Enjoy your oat flour mug cake!

A mug filled with chocolate chip cookie dough and a spoon rests on a wooden surface, hinting at the perfect oat flour mug cake just waiting to be devoured.

Serving Ideas

Top with any of the following: toasted shredded coconut, a dollop of regular or plant-based whipped cream, or my vegan buttercream.
Pair with a comforting and delicious drink like chai coffee or Spanish hot chocolate.
Serve with a scoop of vanilla ice cream if you’re feeling extra decadent!
Crumble the cake and sprinkle it over banana nice cream or a smoothie bowl.

A ceramic mug filled with oat flour mug cake cookie dough and a spoon, with chocolate chips scattered on a wooden surface around the mug.

Expert Tips

The cook time is based on a standard 1000-watt microwave oven. If your microwave is more or less powerful, you may need to adjust the time accordingly, starting at 1 minute and working up in 10-second intervals. When done, it will look set/cooked on top but still be somewhat soft to the touch, as it will continue to set as it cools. It is better to undercook than overcook!
Ensure you use a wide, microwave-safe mug when making this gluten-free cake. You want your favorite spoon to easily fit!
Don’t overmix the oat mug cake, as this can create a denser cake.
Let this gluten-free chocolate chip mug cake rest for about 2 minutes post-cooking to help set the texture and allow the flavors to meld together.

A spoon holds a portion of chocolate chip oat flour mug cake dough above a mug filled with more dough, with scattered chocolate chips on a wooden surface.

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Oat Flour Chocolate Chip Tahini Mug Cake Recipe (Gluten-Free, Vegan)

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Make this gluten-free, vegan oat flour chocolate chip tahini mug cake in minutes—no oven needed! It’s easy to make and irresistibly delicious!

Author: Kristen Wood

Servings: serving

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Course: Dessert, Snack

Cuisine: American

Diet: Gluten Free, Vegan, Vegetarian

Ingredients

1/4 cup oat flour use gluten-free certified if necessary
1/2 teaspoon baking powder
1/8 teaspoon salt
1/4 cup tahini
2 tablespoons maple syrup
2 tablespoons milk of choice I like to use oat milk
2 tablespoons chocolate chips of choice

Instructions

In a standard coffee mug, add the oat flour, baking powder and salt. Mix well.
Add the tahini, maple syrup, and milk. Mix until a smooth batter forms.
Fold in the chocolate chips.
Microwave for 1 minute and 40 seconds.
Enjoy!

Notes

The cook time is based on a standard 1000-watt microwave oven. If your microwave is more or less powerful, you may need to adjust the time accordingly, starting at 1 minute and working up in 10-second intervals. When it is done, it will look set/cooked on top but will still be somewhat soft to touch, as it will continue to set as it cools. It is better to undercook than overcook!

Storage and Reheating

Mug cakes are best consumed fresh from the microwave. However, if you have leftovers, cover them and store them in the refrigerator. Then, consume them within 24 hours to enjoy the best flavors.

To reheat, place your refrigerated oat flour mug cake in the microwave and heat for about 10-15 seconds. This restores softness without overcooking.

Nutrition

Have you tried this recipe?Please Rate + Comment Below!

Oat Flour Chocolate Chip Tahini Mug Cake