Step1_Preheat the oven to 180ºC Grease a bundt cake pan with margarine and sprinkle with flour.

STEP 2

Put the chocolate broken into pieces and the margarine in a bowl and melt for 1 minute in the microwave. Remove from microwave and stir with a fork until a creamy mixture; set aside.

Step3_In an electric mixer, beat on medium speed the eggs together with the sugar and the orange zest until obtain a creamy and homogeneous mixture. Add the chocolate mixture and the milk and beat for 2 to 3 minutes to incorporate. Reduce the mixer speed to low, add the flour mixed with the baking powder and beat until a creamy mixture.

Step4_Pour the mixture into the prepared pan and bake until a toothpick inserted in the center comes out clean, about 40 minutes (the time depends on the oven).

STEP 5

When the cake is cooked, remove from oven and unmold onto a plate. Let cool to room temperature and serve.