The best Oreo Mug Cake Recipe (microwaved!) is your go-to when you’re in desperate need of a delicious dessert fix. It’s fast, rich, and made with simple ingredients you probably already have.

I’ve tested so many mug cake recipes, and this one hits that perfect balance of fluffy cake and Oreo flavor. It takes less time than preheating your oven and delivers all the satisfaction of a full-sized cake in one cozy cup.

Whether it’s a late-night craving or just a “mug life” moment, this easy dessert is a must-try.

Ingredients

This recipe calls for simple ingredients, found in any grocery store.

• Oreo cookies: These serve as the base, adding that iconic chocolatey flavor and giving the cake its soft, cookie-rich texture.
• Milk: Helps soften the Oreos and brings the dry ingredients together into a smooth batter. Use regular or non-dairy milk like almond or soy.
• Melted butter: Adds richness and moisture for a soft, fluffy cake crumb.
• Brown sugar: Provides a deeper sweetness and keeps the cake from drying out.
• All-purpose flour: Just enough to give the cake structure without making it dense.
• Baking powder: Helps the cake rise and creates a light, airy texture.
• Cocoa powder: Boosts the chocolate flavor, making it taste more like a true cake than just crushed Oreos.
• Salt: Balances the sweetness and enhances every flavor in the mug.
• Vanilla extract: Adds warmth and a cozy flavor that pairs perfectly with the Oreos.

Take a look at the recipe card at the bottom of this post for the full recipe!

Add-ons & Substitutions for this delicious Oreo mug cake

You can easily customize this Oreo microwave mug cake based on what you have or what you’re craving. 

• Swap the regular Oreos for golden Oreos, mint Oreos, or even peanut butter-filled ones. 
• Want it dairy-free? Use almond milk or soy milk and plant-based butter.
• Add a handful of semi-sweet chocolate chips or drizzle caramel sauce over the top before microwaving for an extra treat. 
• A scoop of vanilla ice cream or a swirl of Cool Whip on top takes this single-serving dessert to the next level. 
• If you love experimenting, try mixing in a chopped chocolate truffle or a spoonful of chocolate peanut butter.

How to make this easy mug cake recipe

Start by placing four Oreo cookies in a microwave-safe mug. Pour in the milk and melted butter, and let the cookies soak for about two to three minutes. Stir the mixture occasionally to help break down the cookies as they soften.

Once the Oreos are soft, mash them with a spoon until you have a smooth, thick mixture. It should look like chocolate cake batter.

Now add the brown sugar, flour, baking powder, cocoa powder, salt, and vanilla extract right into the same mug. Stir until everything is combined and there are no streaks of dry ingredients left. Scrape the sides of the mug if needed.

Microwave the mug on high for about 1 minute to 1 minute 30 seconds, depending on your microwave’s wattage. The cake should rise and look cooked on top, with a slightly soft center.

Carefully remove the mug from the microwave—it will be hot. Crumble the fifth Oreo over the top for a little crunch and added texture. 

Let the mug cake cool for a minute or two, top with whipped cream, ice cream, or a glass of milk, and dig in while it’s still warm and gooey.

Expert Tips for this Easy Oreo Mug Cake

• Make sure your mug is microwave-safe and large enough to allow the cake to rise without spilling over.
• Don’t overmix the batter once you add the dry ingredients—just stir until everything is incorporated.
• Microwave wattage can vary, so keep an eye on your cake during the last 30 seconds of cooking time.
• If your microwave tends to heat unevenly, pause halfway through and rotate the mug for the best results.
• For a fluffier texture, avoid using double-stuffed Oreos as they have more filling and less cookie.

Frequently Asked Questions

Can I make this Oreo mug cake ahead of time?

This mug cake is best enjoyed fresh out of the microwave. It only takes a few minutes, so there’s no need to prep it in advance.

How should I store leftover mug cake?

​
If you have leftovers, cover the mug with plastic wrap and store in the fridge. Reheat in the microwave for about 10–15 seconds before eating.

Can I freeze this mug cake?

​
This recipe isn’t ideal for freezing. The texture changes once thawed, and it’s so quick to make fresh that freezing isn’t worth it.

How do I know when the mug cake is done?

The top should look set and slightly springy when touched. The cake may be a bit gooey (not raw) in the center, which is totally fine.

What happens if I microwave it too long?

​
Overcooking can make the cake dry and rubbery. Start with 1 minute and add 10-second bursts if needed.

Why does the cake sometimes overflow?

​
If your mug is too small or the batter fills more than halfway, the cake may spill over. Use a large coffee mug for best results.

Why does it matter if I incorporate too much air?

​
Overmixing or whisking too hard can trap air, which may cause the cake to rise and fall unevenly. Stir gently for the fluffiest texture.

Can I skip letting the Oreos soak?

​
Soaking helps the Oreos break down fully. Skipping this step may leave you with dry chunks instead of a smooth cake batter.

What’s the best way to serve it?

Top it with a scoop of vanilla ice cream, whipped cream, or a drizzle of chocolate syrup. It’s the perfect easy and quick dessert to enjoy after a long day.

Take a look at the links below for more single-serving Recipes, or click this link for more cake recipes.

Tag me on Instagram or on Pinterest to see all of your amazing creations!

If you make this recipe, please be sure to give it a star rating and leave a comment below!