Like AngelaY, I find green smoothies of amazing benefit (fruit and veg mixed, so you taste nothing but fruit, but it doesn't spike blood sugars - Google it, for more info).
I'm afraid the mango and lack of veg in the OP's original recipe would be very bad for my sugar levels. Although I am sure it would be delicious.
How about this instead:
100g fresh or frozen spinach
1 courgette
Handful of frozen pineapple chunks
1 apple
1/2 avocado (replaces the cream), or 6 macadamia nuts
Double handful of any berry you like.
A cup or two of water,
Blend til completely smooth
Drink before it reaches room temperature.
You will taste a lovely, creamy, fruity smoothy. It will be GREEN! It will give 6-8 portions of your 5aday, and a glass will send my blood glucose up by about 1.5 after 1 hour, back to normal after 2 hours.