Add all ingredients except elbow noodles and parmesan in a slow cooker. It helps to break up the ground beef into small chunks but it can also be done at the end if desired.
Cook on high for 4 hours or low for 6 hours.
Make sure heat is on high. Add pasta. Stir. Cover and cook 12-15 minutes. Check pasta for doneness. (Pasta is done when it is al dente or to the desired doneness.) Cook longer if necessary, in 5 minute increments.
Serve in bowls with parmesan cheese, if desired.
Freezer Meal Instructions
To use as a freezer meal, add all ingredients except pasta and cheese in a 1 gallon zip top bag. Label and freeze. When ready to cook, remove bag and place frozen contents in a slow cooker. Cook on low for 8 hours or high for 6 hours. Add water and noodles about 30 minutes before serving and turn to high. Serve when noodles are al dente. Top with cheese if desired.