Preheat oven to 180c/350f
Warm the unsweetened applesauce in the microwave
Add in the sugar, sweetener and cocoa powder and whisk to a smooth chocolate paste.
Whisk in the vanilla and egg.
In a separate bowl combine the flour, baking powder and pinch of salt
Add in the chocolate mixture and fold till combined.
Add in the chocolate chips.
Grease an approx 17cm square pan with cooking oil spray
Pour in the batter and bake in the oven for 25-30 mins.
Remove from oven, let cool slightly before slicing.
Enjoy as they are or serve with some fruit, light cream or yoghurt