6 hoagies
2 tablespoons butter
3½ teaspoons garlic, divided (2½ teaspoons in butter)
2 tablespoons + 1 teaspoon olive oil
½ cup finely diced onion
¾ cup finely diced carrot
½ cup finely diced celery
2 teaspoons salt, divided (1/2 teaspoon in carrot onion mixture, 1 teaspoon in meat and ½ teaspoon in sauce)
2 italian sausage links
1 pound ground sirloin
1 egg
½ cup crushed saltine crackers
1½ teaspoons italian seasoning, divided (1 teaspoon in meatballs)
½ cup white wine
6 ounces tomato paste
15 ounces water
1 teaspoon sugar
8 ounces fresh mozzarella, sliced thinly