Cook tortellini according to package directions, omitting salt and fat.
While tortellini cooks, heat oil in a large nonstick skillet over medium-high heat. Add garlic and red pepper; sauté 30 seconds.
Add tomatoes, broth, basil, salt, and baby spinach to pan; cook 2 minutes or until baby spinach wilts. Stir in tortellini; cook 1 minute.