1. Preheat oven to 450°.
2. Combine fennel, 1 tablespoon oil, 1/2 teaspoon black pepper, 1/4 teaspoon salt, red pepper, and garlic in a large bowl; toss to coat fennel. Arrange fennel mixture in a single layer on a baking sheet coated with cooking spray. Bake at 450° for 15 minutes or until fennel begins to brown. Stir; sprinkle cheese evenly over fennel mixture. Bake an additional 5 minutes or until golden brown.
3. Heat a large nonstick skillet over medium heat; add the remaining 2 tablespoons oil. Add beans; cook 2 minutes or until heated. Add fennel mixture, spinach, the remaining 1/4 teaspoon black pepper, and remaining 1/4 teaspoon salt. Cook 2 minutes; serve immediately.