Easy Banana Traybake with Cream Cheese Frosting

Preheat your oven to 190°C (170°C fan/gas 5) and line a 25 x 20cm traybake tin with baking parchment. In a large mixing bowl, combine the golden caster sugar, mashed bananas, oil, and eggs. Whisk them together until well combined; if the bananas are very ripe, a balloon whisk or fork works perfectly.

Add the wholemeal flour, plain flour, cinnamon, and baking powder to the wet ingredients. Whisk until just combined—be careful not to overmix, as the baking powder activates quickly. Stir in the white chocolate chips or chopped walnuts, then pour the batter into the prepared tin.

Bake for 30–40 minutes, or until the sponge is golden brown and springs back when lightly touched. Remove from the oven and let the cake cool completely in the tin.

To make the frosting, beat the softened butter until very smooth and pale, then gradually beat in the icing sugar. Using a spatula, gently fold in the cream cheese until thoroughly incorporated. Avoid over-beating at this stage to prevent the frosting from becoming too runny.