Preheat your oven to 350 degrees F.
In a large Dutch oven, add olive oil. Season the chuck roast with salt and pepper, coat with flour, and sear in the hot oil until browned on both sides.
Lower the heat and add beef broth, coconut milk, soy sauce, red curry paste, ginger, garlic, sugar, and fish sauce. Stir to combine and return the seared beef to the pot.
Cover the pot and roast in the oven for about 2 hours.
Remove the roast, skim off some fat, and shred the beef into bite-sized pieces, mixing it back into the sauce.
Add sliced onion and any other desired vegetables back into the pot with the shredded beef and let rest for 5 minutes.
Serve the Coconut Red Curry Drip Beef in bowls over rice or noodles, drizzling extra drippings on top.