The Process

1. Boil pasta in a large pot while preparing the rest of the dish.
2. In a very large skillet, add heated oil and cook onions until translucent, then brown ground beef.
3. Sprinkle flour over the beef and stir for one minute, until absorbed. Add seasonings, beef stock, and tomato sauce. Bring to a simmer and stir occasionally for 5 - 10 minutes.
4. Add milk and cheese and stir consistently until cheese is melted and combined.
5. Drain pasta, reserving ½ cup pasta water, and add pasta to the skillet. Thin sauce with pasta water if needed.
6. Add salt and pepper to taste and serve!