Spray large skillet with cooking spray; heat over medium heat until hot. Sauté zucchini, onion, garlic, jalapeño chili and cumin until crisp-tender, about 5 minutes.
Add beans to side of skillet; coarsely mash about half the beans. Mix beans, tomato and cilantro into onion mixture and cook 1 to 2 minutes. Spoon 1/3 cup mixture on one side of each tortilla and sprinkle with 1 1/2 tablespoons cheese. Fold tortillas in half and spray both sides with cooking spray.
Bake on cookie sheet at 450° F. until browned and crisp, 5 to 7 minutes, or cook in large skillet over medium heat until browned, 2 to 3 minutes on each side. Garnish quesadillas with salsa and sour cream.
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.