Preheat the oven to 200’C/180’C fan

Line a loaf tin with baking paper

In a large bowl, whisk together the cake mix, margarine and plant-based milk

Add the orange zest and half of the pistachios (20g)

Transfer to the tin and bake for 40-50 minutes

Allow to fully cool before adding the icing

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Combing the icing sugar, orange juice and remaining pistachios in a small bowl

Adjust with more orange juice or icing sugar for the desired consistency

Drizzle the icing over the loaf cake and top with some fresh orange slices