In a large pot over high heat, warm the olive oil. Add the ground beef and cook for 6–7 minutes, breaking it up until browned.
Season the meat with 1 tablespoon of seven spices, then proceed to add the frozen or fresh cup of chopped Italian green beans (regular green beans can be used). Pour in enough water to cover the beans by about 1½ inches. Add bouillon cubes, remaining 1 tablespoon of seven spices, and salt. Stir well.
Bring to a boil, then lower to medium heat and simmer for 10 minutes.
In a small bowl, whisk the flour with ½ cup cold water until smooth (slurry). Add a ladle of hot broth from the pot into the slurry, whisk again, then slowly stir it back into the stew to thicken.
Simmer for another 10 minutes, stirring occasionally, until the beans are tender and the broth slightly thickened.
Stir in lemon juice at the end, adjust seasoning, and serve hot with rice or quinoa.