This orange chocolate lava cake recipe is perfect for those who love the combination of citrus and chocolate. To make this cake, you will need orange zest, chocolate, butter, eggs, sugar, flour, and salt. Melt the orange zest, chocolate, and butter together, then whisk in the eggs, sugar, flour, and salt. Pour the batter into ramekins and bake for 12-14 minutes. Serve warm with a dusting of powdered sugar and a slice of orange.