For a THM E meal or snack: add the optional fruit to give the recipe a healthy slow carb source with the natural fiber in the fruit.
For a THM FP meal or snack: skip the fruit. You can add a scoop of protein powder or add additional egg whites to get the protein content up for a meal.
For a THM S: Skip the fruit/carbs, and add the cream or half and half as a healthy fat source.
For a THM Crossover: Add both the fruit/carb source and the cream or half & half as a healthy fat source.