In a bowl, mix the veal with the sausage meat, bread crumbs, milk, garlic, chopped parsley, egg whites, tomato paste and 1/2 cup of pecorino; season with salt and pepper.
Roll into 1 1/2-inch meatballs.
Bake the meatballs on a lightly oiled baking sheet for about 30 minutes, until browned and cooked through.
In a large saucepan, season the tomato sauce with the crushed red pepper.
Add the meatballs and simmer until the sauce is slightly thickened, about 8 minutes.