Whole30 Un-Stuffed Bell Pepper Soup

Name: Whole30 Un-Stuffed Bell Pepper Soup
Cook time: 40 min
Total time: 40 min
Cuisine: World Cuisine
Ingredients: 1 cup small-diced yellow onion; 2 green bell peppers (core removed and diced medium); 1 red bell pepper (core removed and diced medium); 4 garlic cloves (minced); 1 pound ground beef; 1 pound bulk mild Italian sausage; 3 tablespoons tomato paste; 1 ½ teaspoons kosher salt; ½ teaspoon freshly ground black pepper; ½ teaspoon crushed red pepper flakes; One 15-ounce can fire roasted diced tomatoes; One 15-ounce can tomato sauce; 4 cups low-sodium beef broth; 1 teaspoon dried oregano; 1 teaspoon dried basil; ¼ cup finely chopped fresh flat-leaf parsley (plus more for garnish); 2 cups riced cauliflower (optional for serving (freshly riced, not frozen))