Store leftovers in anairtight containerfor up to 5 days. To reheat, sprinkle with water and cover with a plate or wax paper and warm for 30-60 seconds, stirring halfway through.
Use lean ground beef if desired, or drain off any excess fat once the meat is done cooking.
Add 1 cup finely diced mushrooms to the pan with the onion and beef to easily add a veggie.
Add 8 ounces tomato sauce at the end of cooking for a more robust tomato flavor.
Top with minced fresh parsley if desired.