Line your baking tray with parchment paper. This helps the cake come out easily later. Preheat your oven to 180°C. Make sure the oven is hot before baking starts. This step is very important for even cooking.

Put the softened butter and sugar in a bowl. Mix until light and fluffy. This takes about three to four minutes. The mixture should look pale and smooth. This step gives the cake a soft texture.

Add eggs one at a time into the mixture. Mix well after each egg. This helps everything blend smoothly. If the mixture looks split, do not worry. It will come together later.

Add flour and baking powder to the bowl. Fold gently using a spatula. Do not overmix the batter. Add milk to make it smooth. The batter should be soft and easy to spread.

Pour the batter into the prepared tray. Use a spatula to spread it evenly. Make sure the surface is smooth. This helps the cake bake evenly and look neat.

Place the tray in the oven. Bake for 20 to 25 minutes. The top should turn golden brown. Insert a toothpick in the center. If it comes out clean, the cake is ready.

Take the cake out and let it cool slightly. Spread jam gently over the top. Use a spoon or spatula. Be careful not to tear the cake surface.

Sprinkle desiccated coconut evenly over the jam layer. Press lightly so it sticks well. This adds a lovely texture and taste to the tray bake.

Let the tray bake cool completely. Cut into squares using a sharp knife. Dust with icing sugar if you like. Serve and enjoy your homemade treat.