90-Second Chocolate Oreo Mug Cake

By Marley Goldin
on May 31, 2021
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In need of a quick fix to curb that chocolate craving? This Chocolate Oreo Mug Cake is the quickest and easiest way to satisfy your sweet tooth!
white mug on saucer filled with cake and topped with oreos

In need of a quick single-serve treat? This Chocolate Oreo Mug Cake is easy, decadent, and ready in 90 seconds!

As an environmental scientist, I’m always looking for ways to reduce food waste. And single serving desserts are a great place to start!

Green tip: Did you know that of the billions of pounds of food wasted annually, it is estimated that 50% of it happens in our homes? It’s always best to avoid food waste as much as you can!

And when single-serving means slapping some ingredients together and chucking them in the microwave, I’m even more excited. This is the quickest, easiest, and most delicious chocolate cake recipe you’ll ever find!

overhead shot of chocolate oreo mug cake

Chocolate Oreo Mug Cake Tips and Tricks

What You’ll Need

This chocolate mug cake is something I whip up regularly when I’m feeling lazy but am having a chocolate craving. My favorite thing about it is that it’s made with a lot of pantry ingredients that you may already have at home (yes, Oreo’s are a staple at my house. I’m known to have quite a few Oreo recipes).

Green tip: Make sure your chocolate is sustainably sourced. Look for Fair Trade, Rainforest Alliance, or UTZ certifications as opposed to self-proclaimed sustainability labels that sometimes falsely advertise “sustainably sourced”.

Grabbing your ingredients beforehand means you don’t get halfway through and realize you are missing something and have to waste the ingredients you’ve already used.

chocolate chips, oreos, flour, sugar, coconut oil, baking powder, salt, cocoa powder, milk
Ingredients for Chocolate Oreo Mug Cake

Dry Then Wet

Mix your dry ingredients together before adding your coconut oil and milk. It just makes everything integrate more seamlessly.

I use a fork to mix up my batter. You can use a whisk, too. A spoon may not allow you to get any flour, baking soda, or cocoa clumps out.

pouring milk into dry ingredients of mug cake

Mix Outside of the Mug

It’s best to use a mixing bowl to mix up your batter and then transfer it to a mug. Why? Well, depending on the shape of your mug, you may find it hard to integrate all the ingredients, especially around the edges.

There’s nothing worse than biting into a forkful of powdery flour or bitter baking powder that hasn’t been mixed well into your cake.

That being said, if you’re feeling lazy, you can choose to risk it and mix it all in the mug. I would recommend using a mug that is rounded at the bottom instead of angular, so no ingredients get trapped around the edge.

Add That Crunchy Cookie Crust

Breaking up your Oreo’s and crumbling them on top actually locks in some moisture while cooking in the microwave. It gives your mug cake a gorgeous texture and keeps a cookie crunch on top. YUM!

I just use my hands to break the Oreos into 3-4 pieces. No need to go overboard with the crushing. This whole recipe is about ease!

adding crushed oreos on top of mug cake

Microwaving Time May Vary

Everyone’s microwave is a little bit different. My microwave is 900 watts, and on high, this mug cake is perfect after 90 seconds.

The average microwave is between 600-1200 watts. If you know your microwave is 600 watts, you will probably need an extra 10 seconds. If your microwave is 1200 watts, start with 75 seconds.

But if you’re not sure, stick with 90 seconds. It will be safe to eat and delicious either way, but just make yourself a note for next time if you feel it was slightly overcooked.

Tested Substitutions

Coconut oil is my preference, but this mug cake will be just as delicious with vegetable, canola, safflower, or grapeseed oil.

Green tip: Relatively, the environmental impact of coconut oil is very low. The production of coconuts requires no herbicides or pesticides, uses little land and water, and does not require any tilling or deforestation.

For a healthier alternative, sub in 2 tablespoons + 2 teaspoons of coconut sugar for granulated sugar. You can also opt for cake flour in place of all-purpose flour in equal quantities.

Omitting the cocoa powder in this cake will not yield good results. If you are looking for a less chocolatey Oreo mug cake, check this recipe for cookies and cream mug cake.

Why Vegan Baking?

The mass production of eggs and dairy farming contributes a staggering amount to our overall greenhouse gas emissions and contamination of soil and water. It’s best to buy local, organic eggs and cheese when you can.

Instead, I save the egg and dairy for when it really counts. I’m talking Eggs Benedict and Cheesy Pasta.

Leaving out the dairy and eggs while baking is a great way to reduce your overall consumption of eggs and dairy. Plus, it’s just as delicious and at times, more nutritious (you know I can’t resist a good rhyme when it presents itself).

portrait of chocolate mug cake with whipped cream and oreo on top

Why You Should Make This Chocolate Oreo Mug Cake

  • It’s easy. Mix ingredients and chuck it in the microwave. Does it get any easier than that?
  • It’s quick. 90-seconds for a cake? No, you’re not dreaming!
  • It’s decadent. Chocolatey moist cake with melted chocolate chips and a cookie crust. Need I say more?
  • It’s single-serving. Avoid waste (and over-indulgence) by making a cake for 1!

Loving this Chocolate Oreo Mug Cake and looking for other chocolatey dessert ideas? Check out these Fudgy Brownies and these Cookie Dough Cups for Ice Cream!

Chocolate Oreo Mug Cake

5 from 1 vote
Recipe by Marley Goldin Course: DessertCuisine: American


Prep time


Cooking time


Total time



In need of a quick fix to curb that chocolate craving? This Chocolate Oreo Mug Cake is the quickest and easiest way to satisfy your sweet tooth!


  • 3 tablespoons all-purpose flour

  • 2 tablespoons cocoa powder

  • 2 tablespoons granulated sugar

  • 1/4 teaspoon baking powder

  • 1/8 teaspoon salt

  • 2 tablespoons coconut oil

  • 1/4 cup milk (dairy or unsweetened plant-based)

  • 2 tablespoons dark chocolate chips (dairy-free for vegan)

  • 2 Oreos, crushed


  • In a small mixing bowl, mix together flour, cocoa powder, sugar, baking powder, and salt.
  • Add coconut oil and milk and stir with a fork until combined.
  • Transfer to a 8-15 ounce mug and add chocolate chips to top.
  • Use your hands to break Oreo’s onto 3-4 pieces and place on top of chocolate chips.
  • Microwave for 90 seconds, allow to cool, and enjoy!

Pro Tips

  • Vegetable, canola, safflower, or grapeseed oil will work in place of coconut oil.
  • Microwave times may vary. 90-seconds works for most microwaves, but if you have a lower wattage you may need an extra 10 seconds. Higher watt microwaves may cook your mug cake in just 75 seconds. See above for more details.
  • You can use coconut sugar for a healthier alternative in place of granulated sugar. You will need 2 tablespoons + 2 teaspoons of coconut sugar in place of 2 tablespoons of granulated sugar.

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