1Spray 5-quart Dutch oven with cooking spray; heat over high heat. Spray beef with cooking spray. Add to Dutch oven; cook 3 minutes, stirring frequently. Add onion. Cook 5 minutes longer, stirring frequently, until liquid is evaporated and beef and onion are browned.
2Stir in water, tomatoes and cumin. Heat to boiling; reduce heat to medium. Cover; simmer 20 minutes. Add potatoes. Cover; simmer 10 minutes longer or until potatoes are tender. Remove from heat. Stir in cilantro.