This dairy-free chocolate orange brownie cake is rich, fudgy and very chocolatey, with fresh citrus flavour running through it. It’s the kind of cake that feels indulgent enough for birthdays, celebrations and dinner parties, yet so easy to make. The combination of dark chocolate and orange works especially well here, as the candied peel adds little bursts of sweetness and texture. But you can swap the peel for chopped nuts if you prefer a more classic brownie-style cake. For a vegan version, use flax eggs instead of regular eggs. To make it gluten-free, replace the flour with a mixture of ground almonds and rice or buckwheat flour. This cake looks amazing when baked in decorative tins or silicone moulds -I used a heart-shaped mould, but bundt, rose or floral shapes would be suitable too.