To prepare squash: Lay squash halves, cut side down in a baking pan. Pour 1/2 inch water over top and bake, covered with foil 30 to 40 minutes or until soft. Using a fork, scrape out insides of squash, forming spaghetti like pieces.
Heat a large cooking spray coated frying pan over medium heat. Mix in vegetables, including garlic, and spray with cooking spray. Cook 8 to 10 minutes or until golden. Mix in flour and cook 1 minute.
Pour in broth and tomatoes with liquid. Let boil. Lower heat, place lid on pot, and simmer 15 minutes or until vegetables are soft. Sprinkle with salt and pepper.
Arrange squash pieces onto serving plates and pour vegetables overtop. Garnish with cilantro.