Instant Mashed Potato Gnocchi Al Forno

Name: Instant Mashed Potato Gnocchi Al Forno
Ingredients: 2 cups (4 ounces/113 grams) plain instant mashed potato flakes; 1 cup (5 ounces/142 grams) all-purpose flour; 2 teaspoons table salt , plus salt for cooking gnocchi; 1½ cups water; 1 large egg; 2 tablespoons extra-virgin olive oil; 2 garlic cloves , minced; 1 (15-ounce/425-gram) can tomato sauce; 1 teaspoon sugar; ¼ teaspoon pepper; ¼ teaspoon dried oregano; ½ cup fresh basil leaves , torn into ½-inch pieces; 1/2 cup whole-milk ricotta cheese; 1 1/2 cups shredded whole-milk mozzarella cheese; Grated Parmesan cheese