Bring a large pot of salted water to a rolling boil for the pappardelle. Starting the pasta water now saves time so you can cook pasta just before serving—this ensures it is hot and prevents the sauce from cooling while the pasta cooks.

Pat the thinly sliced top sirloin dry with paper towel and season lightly with sea salt and a few turns of black pepper. Drying the beef helps it brown quickly; a fast sear builds flavor through the Maillard reaction and prevents the meat from stewing in its juices.

Heat 2 tablespoons of olive oil in a wide, heavy skillet or Dutch oven over medium-high heat until shimmering but not smoking. Add the beef in a single layer in 2 batches (don’t overcrowd) and sear for 1 to 1½ minutes per side just to develop color—the beef is thin and should not be cooked through now. Transfer browned beef to a plate. Searing concentrates flavor and creates fond (browned bits) that will enrich the sauce.

Reduce heat to medium and add the remaining 2 tablespoons olive oil to the pan. Add the sliced onions and a pinch of salt. Cook, stirring occasionally, until the onions are soft and just beginning to caramelize, about 8–10 minutes. Cooking the onions slowly converts starches to sugars and creates a sweet base that balances the spices.

Add the minced garlic, grated ginger and cook 30–45 seconds until fragrant—do this to bloom their aromatics without burning. Then add the garam masala, ground coriander and turmeric and stir for 30–45 seconds to toast the spices in the oil; toasting blooms the essential oils and deepens the spice flavors.

Add the diced carrots and parsnip (or turnip) and stir to coat them in the spiced onion mixture. Cook 3–4 minutes until the edges start to soften—this jump-starts their cooking so they finish tender in the short braise without getting mushy.

Pour in the crushed tomatoes and the stock (about 1 cup). Scrape the bottom of the pan with a wooden spoon to release the fond (those browned bits from searing the beef). The tomatoes provide acidity and body while the stock lengthens the braise and distributes flavor.

Return the seared beef and any accumulated juices to the pan. Stir, bring to a gentle simmer, then reduce heat to low. Cover the pan and simmer gently for 12–15 minutes—this quick braise softens the thin sirloin and lets the flavors marry without overcooking the pasta-matched portion of meat. Check after 10 minutes: the beef should be tender but still hold shape; if it’s too firm, simmer a few minutes longer.

While the ragu simmers, cook the chickpea pappardelle in the boiling salted water according to package instructions until al dente (usually 6–8 minutes for many gluten-free pastas). Reserve ½ cup of the pasta cooking water before draining. Starchy pasta water helps loosen and bind the sauce to the noodles.

Uncover the ragu and turn the heat to medium-high to reduce and concentrate flavors if the sauce is thin—simmer uncovered for 2–3 minutes until it reaches a slightly saucy consistency (you want it clingy, not soupy). Taste and adjust salt and pepper. If the ragu tightens up too much, add a splash of reserved pasta water to loosen.

Add the drained pappardelle directly to the pan with the ragu, along with 2–3 tablespoons of reserved pasta water. Toss gently over medium heat for 30–60 seconds so the pasta absorbs the sauce and the starch helps the sauce adhere. Finish with most of the chopped cilantro, tossing to combine.

Divide the pasta and ragu between warm plates or shallow bowls. Garnish with the remaining cilantro and a final drizzle of olive oil or a squeeze of lemon if you like brightness. Serve immediately. The finishing herbs and oil refresh the spices and add a herbaceous lift.