Preheat the oven to 180°C and grease and line a 21 x 11cm loaf tin with baking paper.

Mash the banana, then whisk in the eggs, melted butter and yoghurt until combined. Add the cake mix and NOMU Holiday Baking Spice (if using) and whisk to form a smooth batter.

Transfer half the batter to a separate bowl, sift over the Cocoa Powder and gently fold in until combined.

Using a 1/4 cup measure or ice cream scoop, dollop alternating flavours of batter in the prepared loaf tin. Briefly swirl together with a butter knife – don’t overdo it as this will mix the batters too much, creating muddy swirls.

Sprinkle some chocolate chips over the top and bake for 35-40 minutes or until golden and a skewer inserted into the centre comes out clean.

Allow to cool completely before slicing.

Tip: For extra decadence, you can finish your banana loaf with a chocolate glaze. Melt together equal parts dark chocolate and cream until smooth and glossy, and pour over the cooled loaf. Allow to set for clean slicing.