I listed 3 shells as the serving size, but that's a pretty hearty serving size, so if you're serving it with a filling side dish (refried beans, veggies, rice, etc), you may be plenty satisfied with 2 shells. (emilybites.com)
SERVES: Makes 2 litres / quarts, about 6 hearty servings NOTES: Since you're really relying on the marinara to bring it flavour-wise, make sure you use one that you absolutely love on its own. (thefirstmess.com)
I actually came out with a little higher SP for 8 servings when I put everything into the recipe builder on WW app, but still a very hearty serving for 11SP. (emilybites.com)