{Slow-Cooker} Stuffed Bell Pepper Soup

Bahan-bahan (8 porsi)

• 1 pound ground beef
• 1 large onion (chopped small)
• 4 large bell peppers, cut into bite-size pieces (I used 2 red, a yellow and a green)
• 1 1/2 cups cooked black beans (or 1 can, drained and rinsed)
• 32 ounces beef stock
• 16 ounces tomato sauce
• 2 tablespoons Worcestershire sauce
• 1 tablespoon Italian seasoning blend
• 2 teaspoons kosher salt (divided)
• 1 teaspoon black pepper (divided)
• 1/4 - 1/2 teaspoon crushed red pepper flakes
• 3 cups warm cooked rice