Spicy Eggplant Pasta

Name: Spicy Eggplant Pasta
Ingredients: 2 medium eggplants; 1 1/2 teaspoons salt, plus more as needed; 3 tablespoons olive oil, divided; 1 teaspoon freshly ground black pepper, plus more to taste; 1 medium onion, chopped; 2 cloves garlic, minced; 2 cups chopped plum tomatoes or one 14-ounce can crushed tomatoes; 1 tablespoon fresh oregano, or 1 1/2 teaspoons dry oregano; 2 teaspoons red pepper flakes, plus extra for finishing; 1/4 cup fresh, chopped basil, plus extra for finishing; 1 pound linguine pasta