Fry the ground beef and onion together until the beef is browned and no longer pink inside. Drain the grease (and rinse the beef if wanted to remove extra grease).
Combine the seasoning mix with the amount of water listed on the package in the frying pan, add the Worcestershire sauce and simmer for 5-7 minutes until the sauce thickens.
Transfer the meat mixture to the 9x13 pan and spread out evenly on the bottom.
Place the vegetables on top of the meat in an even layer.
Take the tater tots and spread the entire bag out in an even layer on top of the vegetables.
Cook in the oven for 25-30 minutes, until the tater tots are crispy brown and well cooked. (time may vary) Once the tater tots are cooked, sprinkle the cheese on top evenly and cook until the cheese is melted on top.
Remove from the oven, serve and enjoy!
Recipe nutritional data will vary depending on the seasoning mix used and the ingredient brands.