5 Ingredient Chocolate Cake

5 ingredient chocolate cake….just 5!

2 of the ingredients are for the ganache on the outside, so the actual cake only uses 3.

The main ingredient for this recipe is crushed Oreos. You just mix this with a few other ingredients and you end up with nice fluffy cake that doesn’t take long to make!

The top of the 5 ingredient cake, with a slice being taken out of it.

Video Tutorial

Ingredients for this cake

For the cake layer, here’s the ingredients you’re going to need:

  • Oreos
  • Baking powder
  • Whole milk

That is it!

I don’t really know exactly how it works…I guess it’s because Oreos already have flour and sugar. But I tried this with other biscuits/cookies; it doesn’t work as well.

If you’re wondering, no it doesn’t taste like Oreos. It ends up tasting like an actual chocolate cake.

Here’s what you’re going to need for the ganache:

  • Dark Chocolate
  • Double/heavy cream

I did also add some desiccated coconut to the outside of the cake but you don’t need to add this, I just felt like it would make the cake look a little prettier.

A slice of the 5 ingredient cake on a white plate, with the full cake in the background.

Making a smaller cake

This recipe uses 56 Oreos, which is 4 packets.

Well it was 4 packets for me at least. Google told me each pack of Oreos has 15 in it. But I counted and mine had 14.

I had a theory that someone ate one out of each pack and then sealed it up again, but I feel like that probably didn’t happen. So I’m just assuming that there might be different amounts in a pack in different countries.

Anyway I digress, 56 Oreos is a lot. I just wanted to be able to get a full 8 inch cake layer.

But you can half the recipe and use 2 packets instead which is 28 Oreos. Or you could even just quarter it and use 1 pack. 

The basic ratio is:

  • 1 pack of Oreos (14 Oreos)
  • 1 teaspoon baking powder
  • 120ml milk (1/2 a cup)

I just multiplied this recipe by 4, to get a bigger cake. 

Just remember that you will need to use a smaller cake tin if you make a smaller recipe, otherwise the cake layer will end up being really flat. Also the baking time will be different too, so keep an eye on it!

The cake batter inside of a silver cake tin, before being baked.
The cake inside of a silver cake tin, after being baked.

The ganache

This cake does taste good plain, but I decided to cover it in a chocolate ganache.

You can cover it with whatever you want, whipped cream, buttercream, regular melted chocolate, anything works. 

I just felt like ganache would taste best!

Can I use milk chocolate instead of dark?

I like using dark chocolate in most things I make, I think dark chocolate does a great job at cutting the sweetness in desserts.

But yes, milk or even white chocolate will work.

Just make sure to half the amount of cream if you do use milk or white chocolate. The ganache will be too runny if you use the full amount!

The full 5 ingredient cake on a wooden chopping board, before being cut into.

5 Ingredient Chocolate Cake

4.0 from 1 vote


  • For the cake:
  • 4 packets Oreos (this is 56 Oreos)

  • 4 teaspoons baking powder

  • 480ml whole milk

  • For the ganache:
  • 200g dark chocolate

  • 300ml double cream

  • I also added desiccated coconut to the sides, this is optional


  • Start by pre-heating your oven to 180c/350f. Also grease and line an 8 inch cake tin.
  • Making the cake:
  • In a food processor, crush your Oreos until you get fine crumbs. You can also just add them into a food bag and hit them with a rolling pin.
  • Add these crushed Oreos into a large bowl along with the baking powder and milk. Whisk until everything is combined.
  • Pour this into your cake tin and bake for around 45-50 minutes, or until a toothpick inserted into the centre comes out clean. Once baked, leave to cool completely.
  • Making the ganache:
  • In a bowl or jug, add the chocolate and cream.
  • Heat this in your microwave for 30 seconds, take it out and stir. Now heat it again for 15 seconds this time, then stir. Keep repeating this until all the chocolate has melted and you have a smooth ganache.
  • Decorating the cake:
  • Once the cake has cooled, take it out of the tin and place it onto a wire rack, with the top of the cake facing down. I recommend placing this wire rack onto a tray, so that the tray catches the ganache.
  • Pour the ganache over the cake, until it is completely covered.
  • Leave this on the wire rack for about 10 minutes, then move the cake onto a board or plate.
  • At this point, you can decorate the sides if you want. I added some coconut, you could also add some more crushed Oreos.
  • That's it, cut into it and enjoy!