Cook the Beef:
In a large pot or Dutch oven, cook the ground beef over medium heat until browned. Break it apart with a wooden spoon as it cooks. Drain any excess grease.
Sauté the Vegetables:
Add the diced onion, bell peppers, and garlic to the pot. Sauté for 5-7 minutes, until the vegetables soften.
Add Liquids and Seasonings:
Stir in the beef broth, diced tomatoes, tomato sauce, oregano, basil, smoked paprika (if using), salt, and pepper. Bring the mixture to a gentle boil.
Simmer:
Reduce the heat to low and let the soup simmer for 20-25 minutes, allowing the flavors to meld together.
Add Cooked Rice:
Stir in the cooked rice and heat for an additional 5 minutes, until warmed through.
Taste and Adjust:
Taste the soup and adjust the seasoning with more salt or pepper, if needed.
Serve:
Ladle the soup into bowls and garnish with fresh parsley for a burst of color and flavor.