Slice onion and chop garlic and let sit for at least 5 minutes to bring out their health-promoting benefits.
Prepare all the vegetables.
Heat 1 TBS broth in 11-12 inch stainless steel skillet. Healthy Sauté onions in broth over medium heat for about 5 minutes stirring frequently, until translucent. Add garlic and sauté for another minute.
Add zucchini, yellow squash, remaining broth, green chili, and cook for another 3 minutes or so until vegetables are tender, stirring often. Add tomatoes and continue to cook for another couple of minutes.