Preheat oven to 300 degrees
Season short ribs generously with salt and pepper
In a large Dutch oven, heat 2tbsp olive oil on medium heat.
Once heated, add short ribs and sear on all sides. (2-3 minutes on each side) until golden. Remove from the pan and set aside.
NOTE: Do not overcrowd pan. You may need to sear in batches.
Reduce heat to medium. Add onions, carrots, celery, and garlic with a sprinkle of salt. Cook for 7 minutes, stirring occasionally.
Add tomato paste and cook for 3 minutes before incorporating into vegetables.
Mix.
Add crushed tomatoes, beef broth and salt.
Mix.
Return seared short ribs back to the pan.
NOTE: They should be almost fully submerged in liquid - if not, add more beef broth/stock until they are.
Add thyme, rosemary, bay leaf, and cheese rind (if using). Cover and cook at 300 degrees for 3 hours or until meat is tender enough to shred easily with a fork (or even your fingers!).
When ready to serve, cook pasta and mix into short rib pan.
Top with Parmigiano cheese.
Enjoy!