Phase 1 / Step 1: Sear the Short Ribs In a large Dutch oven, heat olive oil over medium-high heat, season short ribs with salt and pepper, sear all sides until browned, about 3–4 minutes per side, then set aside
Phase 1 / Step 2: Sauté the Aromatics In the same pot, add diced onion, carrots, and celery, cook until softened about 5 minutes, add minced garlic and cook 1 minute
Phase 2 / Step 1: Add Tomatoes and Broth Stir in tomato paste, crushed tomatoes, and beef broth, return short ribs and juices, add bay leaves and rosemary, bring to a simmer
Phase 2 / Step 2: Braise the Ragu Cover pot, transfer to oven at 325°F (163°C), braise 2.5–3 hours until meat is tender and falls from bone
Phase 3 / Step 1: Shred the Meat Remove short ribs, shred with two forks discarding bones, return shredded meat to sauce and mix
Phase 3 / Step 2: Cook the Pasta Prepare pappardelle according to package instructions, reserve 1/2 cup pasta water, then drain
Phase 3 / Step 3: Combine and Serve Toss pasta with ragu, add reserved pasta water to adjust sauce consistency, serve hot garnished with Parmesan