Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add onions; sauté 5 minutes or until browned, stirring occasionally. Spoon onions into a bowl.
Heat oil in pan over medium-high heat. Add potatoes; cook 10 minutes or until browned, stirring occasionally. Reduce heat to low. Stir in onions, broth, and remaining ingredients. Cover and cook 8 minutes or until potatoes are very tender, stirring occasionally.