In a frying pan over medium-high heat, cook sausage until cooked through (about 15 minutes). Remove from heat and let cool.
Preheat oven to 375degF.
In the 13x9 baking dish, add sauce ingredients and stir to combine.
Cut each sausage in half lengthwise. Then stuff each half into a manicotti then line up in the red sauce.
Then put a half of the string cheese between each manicotti shell. Push each shell down in sauce so that it is submerged. NOTE the sauce should be loose, so add more water if needed.
Sprinkle the top with grated parmesan, shredded mozzarella cheese and parsley. Cover with foil and place in oven for 50 minutes.
Remove foil and bake another 20 minutes.
Notes
Italian Seasoning
Keyword grated parmesan, Italian Sausage, manicotti, mozzarella, Parmesan, red sauce, Sausage, string cheese