Mary Berry Jam and Coconut Tray Bake is a light, vanilla sponge cake baked in a tray, then topped with a smooth layer of jam and covered in desiccated coconut. Once cooled, it slices neatly into squares, making it perfect for sharing or storing for later.
225g self-raising flour
225g caster sugar
225g softened butter
4 large eggs
2 tsp baking powder
2 tsp vanilla extract
2 tbsp milk
200g raspberry or strawberry jam
75–100g desiccated coconut
Line your traybake tin with parchment paper and lightly grease the sides for easy removal after baking.
Set your oven to 160°C (fan) or 180°C (conventional) to create a stable temperature for even baking.
Add flour, caster sugar, softened butter, eggs, baking powder, vanilla, and milk into a mixing bowl. Beat them together until the mixture becomes smooth, pale, and well blended.
Pour the batter into the lined tray and level the top with a spatula to ensure the sponge bakes evenly.
Bake for 25–30 minutes, or until the sponge is golden and a skewer comes out clean.
Cool the sponge in the tin for 10 minutes, then transfer it onto a wire rack to cool fully.
Warm the jam slightly so it spreads easily, then coat the top of the sponge evenly without tearing the cake.
Sprinkle desiccated coconut generously over the jam layer while it’s still sticky so it adheres well.
Let the topping set before cutting into squares.