In a large pot set over medium heat, brown one pound beef. Stir in 1 medium chopped onion and 3 chopped bell peppers and sauté for a few minutes. Drain any excess fat, if needed.
Stir in 15 ounces broth, 15 ounce can diced tomatoes, 15 ounce can tomato sauce, 1 1/2 teaspoons Italian seasoning, 1 teaspoon salt, and 1/4 teaspoon pepper. Bring to a boil and reduce the heat to low. Simmer 15 to 20 minutes, stirring occasionally. You can add a little water if it starts getting too thick. If you have time, let it simmer longer.
Add rice and parsley. Stir in the 2 cups cooked rice and 2-3 Tablespoons chopped parsley. Season with salt and pepper, to taste. Ladle into bowls and enjoy warm
Notes
Crockpot version: Brown hamburger, onions and bell peppers in a skillet first. Then add all ingredients to the crockpot and cook on low for 4-6 hours, or on high for 2-3 hours. Then add rice just before serving.Storage: Let soup cool completely, then store in an airtight container or freezer bag (leaving room for expansion) for up to 6 months. It will keep in the fridge for 3 to 4 days; add a splash of broth when reheating if the rice has absorbed too much liquid.