Brown the Ground Beef:
In a large pot or Dutch oven, heat a tablespoon of oil over medium heat. Add the ground beef and cook, breaking it up with a wooden spoon, until browned and cooked through. Drain any excess fat and set the beef aside.
Cook the Vegetables:
In the same pot, add the diced onion and bell peppers. Sauté for about 5-7 minutes until softened. Add the garlic and cook for another minute until fragrant.
Add the Tomatoes and Broth:
Stir in the diced tomatoes, tomato paste, and beef broth. Bring the mixture to a boil, then reduce the heat to a simmer. Let the soup cook for about 10-15 minutes, allowing the flavors to meld together.
Add the Rice and Seasonings:
Stir in the cooked rice, oregano, basil, paprika, salt, and pepper. Continue to simmer for another 5 minutes, stirring occasionally.
Taste and Adjust:
Taste the soup and adjust the seasoning, adding more salt or pepper as needed. If you prefer a spicier soup, you can also add a pinch of crushed red pepper flakes.
Serve:
Ladle the soup into bowls. Top with shredded cheese or a dollop of sour cream if desired. Serve hot.