In a large pot or stockpot, heat olive oil over medium-high heat.
Add 1/2 of beef and sauté for about 5 minutes, stirring, until browned on all sides. Remove beef from pot and set aside. Repeat procedure with remaining beef.
In the same pot, sauté onions for about 5 minutes, stirring often until translucent. Remove onions from pot and set aside.
Add carrots, leeks, and garlic, and sauté for about 5 minutes, stirring often, until barely tender. Return beef and onions to pot. Add tomatoes with juice, tomato paste, broth, oregano, and water, and bring to a boil. Reduce heat to low and simmer for about 1 hour, until beef is almost tender.
Add potatoes and bring back to a boil. Lower heat, cover partially, and simmer for about 15 minutes, until potatoes are barely tender.
Add green beans and kale and cook for another 6 to 8 minutes, until kale is tender.
Season to taste with salt and pepper and serve.
Nutrition (per serving):
400 calories, 10 g fat (2 g. saturated fat), 58 g carbohydrate, 26 g protein, 12 g dietary fiber, 606 mg sodium.
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