Orange brownies

Ingredients
Butter 150 gm
Chocolate chopped ¾ cup
Eggs 3
Caster sugar 1 ½ cup
Orange essence 1 tsp
Orange zest 1 tsp
Flour 1 cup
Baking powder 1 tsp
Orange juice ½ cup
Method
Mix all together in a bowl beat for 3 minutes, pour in a greased 8*8 inches square pan, and bake on 180 degrees for 25 minutes.