One Skillet Chili Mac & Cheese

Name: One Skillet Chili Mac & Cheese
Prep time: 15 min
Cook time: 15 min
Total time: 30 min
Ingredients: 1 lb ground beef; 1 large onion, diced; 1 (15.5 oz) can kidney beans; 2 (15.5 oz) can stewed tomatoes; 1 (32 oz) beef stock; 2 cups shredded sharp cheddar cheese; 1 packet chili seasoning mix; 2 cups elbow macaroni, uncooked