Grease and line a 7″ springform cake tin. Pre heat the oven to 160c.
Whisk the liquids (yoghurt, olive oil, milk, maple syrup and orange juice) into a jug, then leave to one side.
Stir all of the dry ingredients (flour, polenta, ground almonds, baking powder and orange zest) into a large bowl then pour in the liquid mixture and stir until everything’s well combined.
Pour your cake mix into the tin and place in the centre of your pre-heated oven and bake for 35-40 minutes, until a skewer comes out clean.
Once it’s cooked through, place on a wire rack and allow your cake to cool slightly in the tin. Whisk together the maple syrup and orange juice then poke holes into the top of the cake with a cocktail stick and pour the syrup over the cake evenly and generously.
When the orange syrup has soaked into your cake you can take it out of the tin. Decorate with the pistachios, then serve it with a spoon of yoghurt or coconut cream.