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Quick Blackberry Chocolate Cake (vegan)

A super quick vegan chocolate cake filled with blackberries. Perfect for last minute guests or when you just want a quick but luxurious cake that doesn't require much effort..

Quick Blackberry Chocolate Cake topped with chocolate frosting, whipped cream and fresh blackberries

Quick Blackberry Chocolate Cake

Doesn't this quick blackberry chocolate cake look amazing?

It's a decadent chocolate cake filled with fresh blackberries and made in minutes. 

It's dairy-free and egg-free as are the fillings and toppings.

You would never guess this cake was vegan if you were presented with a slice.

It's a good chocolate hit with bursts of fruity pops of blackberry. The cake is super light and soft and has a gooey, lush filling and topping that makes me drool thinking about it.

Quick vegan lemonade cake from above, topped with lemon buttercream, whipped cream and colourful sprinkles

Quick Vegan Lemonade Cake

I recently made a quick vegan lemonade cake using the same method and was eager to try a chocolate version.

The lemonade cake was made with a can of fizzy lemonade for that lemonade sponge cake flavour.

I topped it with lemon flavoured (vegan) butter cream and (vegan) whipped cream and sprinkles. We were very impressed with it. It was light and fluffy and a real treat.

For a special occasion I would rather make a cake from scratch using fresh ingredients and a lot of time and care, but I have to say this style of cake is fabulous for a quick cake if you are short of time or have last minute guests.

I make the lemonade cake as a base for a vegan trifle. If you've not seen it, you must check out my Traditional Scottish Strawberry Trifle which is suitable for vegetarians and vegans and totally lush.

Two quick Blackberry Chocolate Cakes, one topped with blackberry jam and one topped with chocolate icing

How to make a quick chocolate cake with blackberries

I've made this instant chocolate cake with blackberries and blackberry jam, but it would also be fabulous with fresh raspberries and raspberry jam as raspberry works so well with chocolate.

You could also make this a plain chocolate cake without the fruit, but the fruit adds a lot of flavour to the cake and makes it wonderfully moist and moreish.

I'll leave it up to you to decide.

Quick Blackberry Chocolate Cake ingredients - cake mix, chocolate icing, blackberries, blackberry jam, cola

1. Quick cake ingredients

This cake has only 5 ingredients. 

  1. Betty Crocker Devil's Food Cake Mix (or Chocolate Cake Mix)
  2. 330 ml/12 fl oz can of cola
  3. Betty Crocker Chocolate Fudge Icing
  4. Blackberry jam
  5. Fresh blackberries

Quick Blackberry Chocolate Cake - preparing cake tins

2. Prepare cake tins

Grease and line two 20cm/8 inch cake tins and preheat your oven before you begin this cake. It's super quick, so everything has to be ready so the cake can go in the oven the moment it is mixed.

Quick Blackberry Chocolate Cake - cake mix and blackberries

3. Cake mix

Pour the cake mix and just over half of the fresh blackberries into a large mixing bowl, then toss the blackberries in the cake mix. 

Quick Blackberry Chocolate Cake - adding fizzy coke to cake mix

4. Adding fizzy cola

The raising agent in this cake reacts with the fizzy cola. 

When the cola hits the raising agents in the mix it froths up, giving you are really light, airy mixture.

Fold it in gently so you don't knock out all the bubbles.

Quick Blackberry Chocolate Cake Mixture in prepared cake tins

5. Prepared cake mixture

Pour the cake mixture equally into the two prepared cake tins and pop in the oven to bake until a skewer comes out clean.

Quick Blackberry Chocolate Cake- one topped with blackberry jam and one topped with chocolate icing

6. Cool and fill the cakes

Leave the cakes to cool in the tins for a few minutes, then gently turn onto a baking rack to continue cooling. Carefully peel the baking paper off the base of each cake.

Once they are completely cool spread one with blackberry jam and the other with chocolate icing (or buttercream) and sandwich together. 

The cake is quite soft, so you may need a bit of help sandwiching them together. Graham tipped one for me while I slapped the other on top. There may be a better way to do this, so do leave tips in the comment section if you have any.

Quick Blackberry Chocolate Cake

7. Add toppings

Spread a generous layer of chocolate icing (buttercream), whipped cream (I used vegan squirty  cream from Tesco, but this is optional) and fresh blackberries.

Slice of gooey blackberry chocolate cake

8. Serve

Serve yourself a generous slice of this sumptuously wanton chocolate cake and tuck in.

You're welcome!

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A super quick vegan chocolate cake filled with blackberries for last minute guests or when you just want a quick recipe that doesn't require much effort for a luxurious cake. It's egg-free and dairy-free and made in under 30 minutes. #blackberrycake #chocolatecake #veganchocolatecake #dairyfreechocolatecake #eggfreechocolate #blackberries

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Quick Blackberry Chocolate Cake (vegan)

Instant Blackberry Chocolate Cake
Yield: serves 8-10
prep time: 5 Mcook time: 25 Mtotal time: 30 M
An instant blackberry and chocolate cake, made from cake mix, a can of fizzy juice and fresh blackberries. It's decadent, but quick. Perfect when you are short of time or have last minute guests.


  • 425g box Betty Crocker Devil's Food Cake Mix
  • 330 ml can fizzy cola
  • 400g tub Betty Crocker Chocolate Icing
  • 3 heaped tbsp blackberry jam
  • 300g fresh blackberries
  • a few squirts of vegan whipped cream (optional)


How to bake Quick Blackberry Chocolate Cake (vegan)

  1. Heat the oven to 180c/160c fan/gas mark 4/350f.
  2. Grease and line 2 x 20cm/8 inch cake tins.
  3. Pour the cake mix and just over half of the blackberries (reserve some for decoration) into a large mixing bowl.
  4. Pour in the fizzy cola and gently fold into the cake mix.
  5. Divide the cake mixture  between the two cake tins and pop them in the oven for 25 minutes until springy and an inserted skewer comes out clean.
  6. Pop the pans on a baking rack to cool. Once they are cool enough to handle, gently tip out the cakes and peel off the baking paper. 
  7. Gently place the cakes on a baking rack to cook completely.
  8. Once they are cool, spread one with jam and another with a third of the chocolate icing and carefully sandwich together, filling to filling.
  9. Place on a cake plate and top with a generous layer of chocolate icing, whipped cream (optional) and fresh blackberries.
  10. Enjoy!
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instant chocolate cake, coke chocolate cake, cola chocolate cake, cake made with can of juice, cake made with coke, cake make with cola, betty crocker chocolate cake, vegan chocolate cake, dairy-free chocolate cake, egg-free chocolate cake, blackberry and chocolate cake
, American, vegan
Created using The Recipes Generator


  1. This was so easy to make, and just lovely! Thank you for sharing!

    1. Oh I am so glad you enjoyed it Ashley. Thanks for letting me know!

  2. Omg how good does this look! I wish I was having a piece for after dinner today. As if it is vegan!!

    1. I know, sorry to torment you like that and yes it's vegan.

  3. I made the lemonade cake and used vanilla butter cream. It was really easy and we enjoyed it and ate too much. I must try this one too. I suspect my daughter will prefer this chocolate one. Jill

    1. Brilliant Jill. I am so glad you tried it and yes try this one too. The blackberries take it over the edge.

  4. What a great combo! I'm excited to try this divine recipe!

  5. Would never have guessed this cake only had 5 ingredients, amazing!

    1. It's a great last minute store cupboard cake. So quick and tasty.


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