This fix it and forget it meal is filling and flavorful.
Brown ground beef in a skillet. Set aside.
Optional, sauté onions, celery, and carrots in a cast iron skillet until softened. Add garlic in the last 2 minutes.
Add all the ingredients minus Pasta and Parmesan Cheese into a 6 quart slow cooker. Cover and cook on high for 4-5 hours or low for 7-8 hours.
Cook pasta according to package directions, and then stir in cooked pasta to the slow cooker in the last 10-20 minutes of cooking.
Garnish with favorite cheese or nutritional yeast and enjoy!
Refrigerate leftovers. The flavors meld in the fridge and it's even more flavorful the next day!