4 tablespoons olive oil, divided

1 large onion, diced

2 teaspoons kosher salt, divided

1 eggplant, diced

1 zucchini, diced

1 red pepper, diced

4–6 cloves garlic, minced or 4–6 cubes Gefen Frozen Garlic

1 teaspoon dried basil

1 teaspoon Gefen Oregano or other dried oregano

1/2 teaspoon ground mustard

1/2 teaspoon ground black pepper

1 pound (450 grams) pasta like Tuscanini Penne

3 cups milk

1 and 1/2 cups water

1 and 1/2 to 2 cups shredded mozzarella cheese