In a large skillet brown ground beef and onions together.
Stir in tomatoes, tomato sauce, chicken stock, pasta, ketchup, mustard and Worcestershire sauce.
Bring to a boil, cover and reduce to simmer.
Cook for 10-12 minutes, until pasta is cooked, stirring occasionally. Season with salt and pepper to taste. Stir in cheddar cheese until melted, and then stir in the crumbled bacon.
Serve immediately. Garnish with desired burger toppings.