Preheat oven to 180C.
Melt dark chocolate in a heatproof bowl over boiling water and put it aside. Let it reach at room temperature.

Beat eggs, sugar and vanilla well until creamy, for about 5 minutes.

Take a bowl add Maida, cocoa powder and baking powder mix with a spatula.

Pour orange cube in egg batter then add maida batter and olive oil and mix with hand whisker.

Line a rectangular baking tray with parchment paper and pour the mixture in it.

Bake for 45 to 55 minutes and take it out of oven when it’s still moist. Strain melting chocolate.

Let it cold and pour melting chocolate on top after slicing place orange slice on top and then serve.