Preheat oven to 350F, spray a regular sized loaf pan with non stick spray.
In a bowl whisk your egg, egg whites and sugar together. Add in your buttermilk, mashed banana and vanilla. Mix well.
Stir in your flour, cocoa powder, baking powder and soda. Then mix in your food coloring.
Pour batter into loaf pan and bake in oven for approx 45-50 minutes.
While loaf is baking mix up your icing, cream together your cream cheese, icing sugar, butter and vanilla. Chill icing in fridge. Each serving (with icing) is 5 smart points on all 3 MyWW programs or 3 points plus (old program) if you choose not to make the icing it will be 1 point less.
Let loaf cool for at least an hour before icing, then cut into 10 pieces after you have iced the loaf, best stored in the fridge.
Nutritional info per serving (not incl banana) Calories 127...Fat 2.4g..Sat fat 1.3g...Carbs 21.2g....Fiber 0.7g...Sugar 6g... Protein 4.1g..