Flourless Orange and Chocolate Cake

1. 1

   Put the orange in a microwave safe bowl.

2. 2

   Add 250ml water, cover with clingfilm and microwave on high for 20 minutes, turning halfway through (or simmer for 1 hour in a small saucepan).

3. 3

   Leave to cool, still covered.

4. 4

   Heat oven to 180C.

5. 5

   Line a 20cm round springform tin with baking parchment.

6. 6

   Cut the orange in half and remove pips.

7. 7

   Put in a food processor with 5 tbsp of orange liquid left in the bowl and blitz to a smooth puree.

8. 8

   Add the sugar, melted chocolate, egg yolks and baking powder and whiz again to mix thoroughly.

9. 9

   Tip into a large bowl.

10. 10

    Beat the egg whites until stiff, but not dry and fold into chocolate mixture.

11. 11

    Spoon into lined tin.

12. 12

    Put the tin on a baking sheet, then in the oven.

13. 13

    Bake for 1 hour covering with a piece of foil or baking parchment halfway through to stop the top burning.

14. 14

    Cool in the tin.

* Per serving · 4 servings · Values may vary.