1. Heat water and onion in a medium nonstick skillet over medium-high heat. Sauté onions for five minutes.
2. Add garlic and sauté for another minute. Add another tablespoon of water if the skillet becomes too dry.
3. Add meat and brown on all sides for about one minute.
4. Add tomato, spinach and spices. Cover and cook for five minutes.
5. Remove lid. Cook for another five minutes, uncovered.
6. Stir in butter until melted and salt and pepper to taste.
7. Serve over rice.