This hamburger soup with macaroni feeds a crowd of people. Serve with Parmesan cheese, a salad, and warm crusty bread for a great meal. Make it ahead for even better flavor.
Heat a large soup pot over medium-high heat. Cook and stir ground beef and onion in the hot skillet until beef is browned and crumbly and onion is translucent, 5 to 7 minutes. Drain and discard grease.
Add diced tomatoes, beef broth, water, carrots, celery, parsley, bay leaf, salt, chili powder, and thyme. Bring to a simmer and cook for 3 to 4 hours.
Add macaroni and cook, stirring occasionally, until tender yet firm to the bite, 8 to 10 minutes.
Per Serving: 288 calories; protein 17.6g; carbohydrates 26.7g; fat 11.5g; cholesterol 41.7mg; sodium 924.9mg.