In a large pot on medium heat, heat 2 tablespoon of the olive oil. Add pancetta and fry until pancetta is cooked and slightly crisp. Remove from the pot and drain on a paper towel.
Season flour with salt and pepper, and dredge short ribs in flour. Add short ribs to the same pot that the pancetta was cooking in. Cook the short ribs on each side until browned, about 7 minutes total. Remove from the pot.
At this point, deglaze the pot with ¼ cup to ½ cup of the red wine. Scrape the bottom of the pot with a wooden spoon to loosen up any bits that have stuck to the bottom. Add the remaining olive oil to the pot.
Add the onion and carrot to the pot, let them cook down. When they are halfway cooked, add the garlic in. Season with salt and pepper.
Once onion, carrot and garlic are cooked, add the crushed tomatoes to the pot. Add the ribs and pancetta back in, as well as the beef stock, remaining red wine, rosemary, bay leaf and oregano. Season with salt and pepper.
Bring the mixture to a boil, then reduce heat and simmer with the lid on for 1 hour 15 minutes. Then take the lid off and continue cooking the sauce for another 1 hour 30 minutes, stirring occasionally.
When the sauce is almost done, bring a large pot of water to boil. Throw in the pappardelle when the water is boiling, and add salt to the pasta water.
Once pappardelle are cooked to al dente, drain, and add the sauce to the pappardelle. Leave the short ribs aside to use as a main dish. Alternatively, you can shred the short ribs up and mix them in with the pappardelle.
Top with parmesan cheese and enjoy!