Zucchini Ravioli

Name: Zucchini Ravioli
Ingredients: 3 large cloves garlic , divided; 2 tablespoons extra-virgin olive oil; ½ teaspoon fennel seeds; ¼ teaspoon crushed red pepper; 1 ( 24 - ounce ) jar low-sodium marinara sauce; 1½ teaspoons balsamic vinegar; 1 large zucchini; 1 (10-ounce) package frozen chopped spinach , thawed and squeezed dry; 1 cup whole-milk ricotta cheese , patted dry; 1 cup finely grated Parmesan cheese , divided; 1 large egg , lightly beaten; 2 tablespoons chopped fresh basil , plus more for garnish; 2 teaspoons grated lemon zest; ½ teaspoon ground pepper; ⅛ teaspoon salt