A simple chocolate traybake with a chocolate glaze topping, with a slightly fudgy taste and texture, which doesn't crack when sliced.
The glaze can also be used as a topping for cupcakes, Chocolate Melting Moments, buttercream buns, a filling for sponge cakes, or drizzled over an ice cream sundae. What a treat that would be.

This is an overview of the ingredients I used to make this recipe, with possible alternatives and why I may have used them. A complete list of ingredients and full instructions can be found in the Recipe Card below. Or click the 'Jump to Recipe' button at the top of this post. Tip: Always read through a recipe before you start, to ensure you have all the ingredients and understand the method.
INGREDIENTS
For the sponge traybake
- Butter - unsalted and softened
- Sugar - caster sugar is best. Granulated has larger gains and will take longer to combine with the butter.
- Egg - Free range and organic if possible.
- Self Raising flour - If using plain flour, you will need to add some raising agent
- Cocoa powder - good quality. Sieved.
- Vanilla Extract - try not to use vanilla essence. It's not the same.
- Milk semi skimmed or whole milk.
For the chocolate glaze topping
- Dark chocolate - this gives a rich fudgy taste to the chocolate glaze topping.
- Butter - unsalted
- White chocolate - for decoration
INSTRUCTIONS
Make the Traybake chocolate sponge.
- Step 1: Preheat the oven to 180deg conventional oven. Grease and line the base of a 25cm x 20 cm x 2cm deep traybake tin or similar with baking parchment.
- Step 2: Using an electric mixer, beat the butter and sugar together until light and fluffy. Gradually add the eggs one at a time, adding a little flour in between each one to help prevent curdling. Mix until well combined.
- Step 3: Add the remaining flour, cocoa powder, vanilla extract, and milk. Mix until well combined.

- Step 4: Pour the sponge cake mixture into the prepared tin and spread evenly. Bake for 20 - 25 minutes in the centre of the oven or until baked, testing the centre of the cake with a skewer until it comes out clean. Leave in the tin to cool completely before adding the chocolate topping.
- Note: If the sponge is still warm, the chocolate glaze topping will melt further and run over the sides of the sponge.
Make the Chocolate Glaze Topping

- Step 5: Melt the dark chocolate and butter in a heat-proof bowl over a pan of simmering water. Stir frequently until the butter and chocolate have melted and the glaze is shiny and smooth. Set aside to cool a little.
- Step 6: Pour the chocolate over the cooled sponge traybake while still in the baking tin. This will help prevent the chocolate from oozing over the sides of the cake.

- Step 7: Leave the chocolate glaze topping to cool. Before it sets completely, roughly chop the white chocolate and scatter it over the top. NOTE: If the dark chocolate is still warm, the white chocolate will melt. Leave it to cool a little longer if needed.
NOTES
- If you like the idea of a firm chocolate topping, omit the butter. Melt the chocolate in a heat-proof dish over a pan of simmering water. But this topping will crack when you begin slicing through the cake.
- Some chocolate does not melt well, as it often contains oil of some kind and could split when melted. For a rich dark chocolate flavour, use high-quality cocoa solids over 50%.
Storage
- Room temperature - This chocolate traybake will keep for a few days in an airtight container.
- Freeze - The sponge will freeze well in suitable freezer wrapping and a container. Bring it back to room temperature before adding the chocolate glaze.

Chocolate Traybake with a Chocolate Glaze
Equipment
- 1 Baking tin 25cm x 20 cm x 2cm deep
- Baking parchment
Ingredients
For the sponge traybake
- 225 g butter softened
- 225 g caster sugar
- 3 large eggs or 4 medium eggs
- 200 g self raising flour sieved
- 25 g cocoa powder sieved
- ½ teaspoon vanilla extract
- 1 tablespoon milk
For the Chocolate glaze Topping
- 200 g dark chocolate roughly chopped
- 90 g unsalted butter cut into cubes
- 25 g White chocolate. for decoration
Instructions
Make the Traybake chocolate sponge.
- Preheat the oven to 180deg conventional oven. Grease and line the base of a 25cm x 20 cm x 2cm deep traybake tin or similar with baking parchment.
- Using an electric mixer, beat the butter and sugar together until light and fluffy. Gradually add the eggs one at a time, adding a little flour in between each one to help prevent curdling. Mix until well combined.225 g butter softened, 225 g caster sugar, 3 large eggs
- Add the remaining flour, cocoa powder, vanilla extract, and milk. Mix until well combined.200 g self raising flour, 25 g cocoa powder, ½ teaspoon vanilla extract, 1 tablespoon milk
- Pour the sponge cake mixture into the prepared tin and spread evenly. Bake for 20 - 25 minutes in the centre of the oven or until baked, testing the centre of the cake with a skewer until it comes out clean. Leave in the tin to cool completely before adding the chocolate topping.
- Note: If the sponge is still warm, the chocolate glaze topping will melt further and run over the sides of the sponge.
Make the Chocolate Glaze Topping
- Melt the dark chocolate and butter in a heat-proof bowl over a pan of simmering water. Stir frequently until the butter and chocolate have melted and the glaze is shiny and smooth. Set aside to cool a little.200 g dark chocolate roughly chopped, 90 g unsalted butter cut into cubes
- Pour the chocolate over the cooled sponge traybake while still in the baking tin. This will help prevent the chocolate from oozing over the sides of the cake.
- Leave the chocolate glaze topping to cool. Before it sets completely, roughly chop the white chocolate and scatter it over the top. NOTE: If the dark chocolate is still warm, the white chocolate will melt. Leave it to cool a little longer if needed.25 g White chocolate.
Notes
- Room temperature - This chocolate traybake will keep for a few days in an airtight container.
- Freeze - The sponge will freeze well in suitable freezer wrapping and a container. Bring it back to room temperature before adding the chocolate glaze.





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