Spaghetti Squash Caprese

Name: Spaghetti Squash Caprese
Ingredients: 1 medium spaghetti squash ( 3½ pounds ), halved lengthwise and seeded; 4 tablespoons extra-virgin olive oil , divided; 3 medium cloves garlic , thinly sliced ( 1 tablespoon ); ¼ teaspoon crushed red pepper; ¼ cup sliced fresh basil , plus small leaves for garnish; 5 medium plum tomatoes , sliced ( 2¼ cups ), divided; 1 (15-ounce) can no-salt-added great northern beans , rinsed; ¾ teaspoon salt; 6 ounces sliced fresh mozzarella ( 1 cup ); 1 tablespoon balsamic glaze