Step 1: Sear the Beef:
Pat the boneless beef short ribs dry with paper towels and season generously with salt and freshly ground black pepper. Heat the olive oil in a large Dutch oven or heavy-bottomed pot over medium-high heat. Sear the short ribs in batches until browned on all sides, about 3-4 minutes per side. Remove the seared short ribs from the pot and set aside.
Step 2: Saut the Vegetables:
Add the chopped onion, carrots, and celery to the pot and cook over medium heat until softened, about 5-7 minutes. Add the minced garlic and tomato paste and cook for another minute until fragrant.
Step 3: Deglaze the Pot:
Pour in the red wine and scrape up any browned bits from the bottom of the pot. Let the wine reduce slightly, about 2-3 minutes.
Step 4: Braise the Short Ribs:
Return the seared short ribs to the pot. Pour in the beef broth until the short ribs are mostly submerged. Add the fresh rosemary, thyme, and bay leaf. Bring the mixture to a simmer, then cover the pot and transfer it to a preheated oven at 325F (160C).
Step 5: Cook Until Tender:
Braise the short ribs in the oven for 3-4 hours, or until they are fork-tender and easily shreddable. Check the short ribs periodically and add more beef broth if the liquid level gets too low.
Step 6: Finish the Sauce:
Once the short ribs are tender, remove the pot from the oven. Take out the short ribs and set aside. Strain the braising liquid through a fine-mesh sieve, discarding the solids. Return the strained sauce to the pot and bring to a simmer over medium heat. If desired, stir in a tablespoon of balsamic vinegar for added brightness. Let the sauce reduce slightly, about 5-10 minutes, until it thickens to your desired consistency.
Step 7: Serve:
Return the short ribs to the pot with the reduced sauce and heat through. Serve the boneless beef short ribs over mashed potatoes, polenta, or your favorite side dish. Garnish with fresh herbs, if desired.
Optional Tips:
For extra richness, add a few strips of bacon or pancetta to the pot before searing the beef.
If you don't have red wine, you can substitute with additional beef broth.
The braised short ribs can be made ahead of time and reheated. The flavors will actually improve overnight.