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Home » Recipes » Chocolate Cake Bars

Chocolate Cake Bars

July 18, 2025 by Ciara Attwell, Updated September 16, 2025

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Delicious soft and fudgey Chocolate Cake Bars. So easy to make, all in one bowl. A great baking recipe for kids!

A big stack of Chocolate cake bars served with whole strawberries.

If you are looking for an easy baking recipe to try with the kids then these Chocolate Cake Bars are a must!

They’re so easy to make. Everything gets mixed by hand in one bowl. No special equipment needed. Perfect for children to learn to bake in a simple and safe way.

A big stack of Chocolate cake bars served with whole strawberries.

How To Make Chocolate Cake Bars

Below are some step by step photos and instructions to make these cake bars. Full measurements for the ingredients are in the recipe card further down.

  1. Add greek yogurt, sugar, eggs, melted butter and vanilla to a bowl.
  1. Mix well with a spoon until everything is well combined.
  1. Fold in flour, cocoa powder and bicarbonate.
  1. Transfer to a lined baking dish and bake for 15 minutes.
Chocolate cake bars fresh out of the oven.

Once cooked and out of the oven, it’s important to leave the cake bars to rest for 15 minutes.

This allows them to firm up a little, will make it much easier to cut them and also stop them falling apart.

Chocolate cake bars fresh out of the oven and being cut into equal squares.

Cut into 16 squares and you have the perfect little snack sized portion of cake to enjoy.

Storing & Freezing

These cake bars will keep in an airtight container at room temperature for 2-3 days.

They can also be frozen and will defrost at room temperature in a couple of hours.

A big stack of Chocolate cake bars served with whole strawberries.

More Recipes?

Looking for other kid-friendly recipes like this? Try these:

  • 5 Minute Lunchbox Pasta Salad
  • Hot Packed Lunch Ideas for Kids
  • Two Ingredient Jam Tarts
  • School Lunchbox Ideas For Picky Eaters

Print

Chocolate Cake Bars


★★★★ 4 from 1 reviews
  • Author: Ciara Attwell
  • Prep Time: 7 minutes
  • Cook Time: 15 minutes
  • Total Time: 22 minutes
  • Yield: 16 1x
  • Category: Cake
  • Method: Baked
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Description

Delicious soft and fudgey Chocolate Cake Bars. So easy to make, all in one bowl. A great baking recipe for kids!


Ingredients

  • 300g greek yogurt
  • 100g sugar
  • 2 medium eggs
  • 80g butter, melted 
  • 2 tsp vanilla extract
  • 100g plain flour
  • 40g cocoa powder (unsweetened)
  • 1 tsp bicarbonate of soda

Instructions

  1. Preheat the oven to 180c and line a 8×8 inch square baking dish with parchment paper.
  2. Add the greek yogurt, sugar, eggs, melted butter and vanilla to a large bowl and mix with a spoon.
  3. Add the flour, cocoa powder and bicarbonate and fold just enough so that the ingredients are all mixed.
  4. Transfer the mixture into the lined dish.
  5. Bake in the oven for 15 minutes.
  6. Remove from the oven and allow the cake to cool in the tin for another 15 minutes. This will make it a lot easier to cut and stop it falling apart.
  7. Remove from the tin by lifting the sides of the parchment paper and placing onto a chopping board.
  8. Cut into 16 squares.

Notes

These cake bars will keep at room temperature in an airtight container for 2-3 days.

They can also be frozen. Defrost at room temperature in 2-3 hours.

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Filed Under: Cake & Bread Recipes, Nut Free Recipes, Recipes

Comments

  1. Becky says

    September 3, 2025 at 5:36 pm

    Really lovely recipe but I find mine sinks in the middle once I take it out. It was also a bit raw in the middle after the 15 minutes- any advice? Followed recipe exactly!

    ★★★★

    Reply
    • Ciara Attwell says

      September 4, 2025 at 7:57 am

      Did you use the same size tin I used? It may also be the case that your oven is not quite as hot as mine. You’d be surprised at how much they vary even if you think they are set to the correct temperature! Next time maybe cook it for an extra few minutes. Leaving it to cool in the tin for an extra 15 minutes is also important as the cake will continue to cook from the residual heat even when out of the oven.

      Reply
  2. Liberty says

    August 5, 2025 at 6:29 pm

    These are incredible!!! Such a hit and so easy xx THANK YOU

    Reply
    • Vicky says

      August 6, 2025 at 9:07 am

      Thank you! glad you enjoyed them.

      Reply

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Hi, I'm Ciara! I'm a food writer and cookbook author and I'm always looking for new ways to make food fun and interesting for kids! I specialise in fussy eating and share tips and tricks to get your kids eating better along with lots of family friendly recipes. Read More…

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