Hamburger Soup with Macaroni

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.