Eggplant Rollatini Is Packed with Protein

Name: Eggplant Rollatini Is Packed with Protein
Ingredients: Cooking spray; 2 large eggplants (about 1 pound each), trimmed; 2 tablespoons extra-virgin olive oil; 1 cup whole-milk ricotta cheese; ⅔ cup shredded low-moisture part-skim mozzarella cheese, divided; 4 tablespoons grated Parmesan cheese, divided; 1 large egg; 2 tablespoons chopped fresh basil, plus more for garnish; 1 large clove garlic, grated with a microplane; 1 teaspoon grated lemon zest; ⅛ teaspoon salt; ⅛ teaspoon ground pepper; 2 cups baby spinach, chopped; 1 (24-ounce) jar lower-sodium marinara, divided