01 -
Heat a large skillet over medium heat and add the ground beef. Cook, breaking it apart with a spoon, until completely browned. Drain off any excess grease.
02 -
Sprinkle the flour over the cooked beef and mix it in thoroughly. Slowly add the milk while whisking constantly to prevent lumps from forming.
03 -
Stir in the ketchup and Worcestershire sauce. Season with salt and pepper, then let it simmer for 2-3 minutes until the sauce thickens up nicely.
04 -
Toss in the cooked pasta, crumbled bacon, and most of the cheese. Mix everything until the cheese melts completely and coats all the ingredients.
05 -
Remove from heat and serve right away while hot. Sprinkle any remaining cheese or extra bacon on top if desired.