In a large pot, heat the oil over medium-high heat and add the beef. Sauté for 3 to 5 minutes or until browned on all sides.
Stir in the tomatoes, tomato sauce, onions, and jalapeño. Turn the heat down to low and cover the pot. Simmer for 30 minutes.
Add the spinach and Worcestershire sauce. Continue simmering for another 10 minutes or until the beef is tender.
Check your seasonings and add more salt or pepper if needed.
Dish out into individual soup bowls and garnish with the seeds.
Serve and enjoy!