Easy Oreo mug cake recipe

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Learn how to make an OREO mug cake from scratch in the microwave with this easy recipe. This recipe makes a vanilla mug cake flavoured with crushed OREO cookies for a quick and easy treat!

Image of Oreo mug cake topped with whipped cream and crushed Oreo cookies.

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If you are craving cake, but it's late at night or you don't want to make a full-sized recipe, try this Oreo mug cake, a chocolate dessert that serves one person, ready in under 10 minutes and with virtually no cleanup! That's the beauty of mug cakes!

Image of ingredients to make a Oreo mug cake measured out.

The ingredients you need

Like any mug cake, the ingredients are pretty standard and you probably have them all in your pantry and fridge!

all-purpose flour to bind all the ingredients together and make this a cake (as opposed to a brownie)
Oreo cookies or your favourite chocolate sandwich cookies to add Oreo flavour to the cake and also for garnishing the mug cake before eating
sugar, granulated sugar or brown sugar will work here, but I find brown sugar adds a little extra flavour, which is important when microwaving foods because they don't have time to caramelize at all
baking powder is very important here to help the cake rise quickly in the microwave. Do not mix up baking powder and baking soda. Read this comparison of baking powder versus baking soda if you are confused.
salt, preferably Diamond Crystal fine kosher but even table salt will work here because it's just a pinch
milk, preferably whole milk with 3.25 % fat
neutral oil, like canola oil, is used instead of butter to make mixing easier. Another option would be to melt the same quantity of butter in the mug first in the microwave before adding the other ingredients
vanilla is important in this recipe to add flavour. Yes, you can make this recipe without it, but I find just a couple drops add a little more depth of flavour to the cake which can be quite bland otherwise.

Image of dry ingredients in a mug to make an Oreo mug cake including crushed Oreo cookies and light brown sugar.

Special tools and equipment

Obviously the other important element to this recipe is the microwave oven. Sure, you could bake this recipe in a regular home oven or even a toaster oven, but that would take longer and we want cake fast!

The other important piece to this recipe is the mug. Choose the right mug: the mug must be microwave safe and it should have a volume of about 250 mL (1 cup or 8 fluid ounces), otherwise, there's a risk that the cake batter will spill over as it rises in the microwave.

Oreo mug cake batter in a mug before cooking it in a microwave oven.

Oreo mug cake after cooking in a mug in a microwave.

The method

This Oreo cake is easy and serves only one person. All the ingredients are measured directly into a mug and mixed with a fork. It's a process similar to the muffin mixing method, where all the dry ingredients are combined separately from the wet ingredients before mixing the two together.

Special equipment

The cake is microwaved to cook it, instead of baking it in the oven. It cooks really quickly (takes 90 seconds in my microwave). When it's ready to eat, it's still warm. This is the perfect solution to a Friday night craving for cake.

If you don't have a microwave, you have options to bake the mug cake in the oven. You could bake this in a toaster oven (or a conventional oven). Just make sure your mug is oven-safe. Or use a ramekin with a volume of at least 250 mL (1 cup).

Image of Oreo mug cake after cooking in a mug in a microwave.

How to tell if it's cooked

The only trouble I've had with mug cakes cooked in the microwave is checking if they are done baking/cooking. When you microwave a mug cake, you can watch the progress through the window. However, after about 60 seconds, the window of the microwave fogs up from the evaporation and steam generated. This means, you can't see what's happening or rely on visual cues.

The only thing you can do is pause the microwave to check if your cake is done baking and use a cake tester. Insert it into the centre of the cake, all the way to the bottom, to make sure it comes out clean. Unfortunately, this can lead to the cake on the bottom becoming gummy if it's under-baked because the cake collapses back down. Trial and error with your microwave will help you figure out what is the perfect cook time for your mug cakes. In my microwave, it takes 90 seconds on high power.

Toppings

Once your mug cake is done cooking in the microwave, I highly suggest topping it with:

ice cream, either vanilla ice cream or cookie ice cream
a dollop of sweetened whipped cream
crème anglaise, would make an awesome dessert sauce for this
chocolate syrup (Hershey's chocolate syrup or a warm homemade chocolate fudge sauce like the one in this banana split cake) or chocolate ganache
sprinkles are always a good option too!

Other mug cakes to try

If you are a fan of single serving cakes that can be cooked in the microwave in under 2 minutes, try these recipes:

chocolate mug cake, made with a chocolate cake batter and chocolate chips
chocolate chip mug cake, made with a vanilla cake batter and chocolate chips

Please note that mug cakes are meant to be mixed, cooked, and eaten right away. This is not a cake recipe that I would store for later. I don't recommend storing this cake.